National Provider Identifier Research Articles

Securing the Future: Financial Ties of Thoracic Surgery Program Directors to Industry

Thoracic surgery program directors (PDs) are key mentors for the next generation of cardiothoracic surgeons and surgeon-scientists. This study evaluates the industry payments to PDs compared to other practicing thoracic surgeons to assess potential conflicts of interest and their influence. PDs were identified using the Electronic residency application system (ERAS) and their National provider identifiers (NPIs). Industry payments from 2015 to 2021 were extracted from the OpenPayments (cms.gov) database. We analyzed the number and types of payments, including consulting fees, speaking engagements, and research-related contributions. Payments were compared by PD characteristics such as gender, specialty, and academic metrics using the Chi-square test and Kruskal-Wallis test. All 77 identified PDs (66 males and 11 females) received industry payments, totaling $14,094,422 across 8,028 transactions. The median payment was $16716, with maximum reaching $2,661,001. Male PDs and those in cardiac specialties received significantly higher payments. Research funding for PDs was predominantly awarded to males (100%). Significant disparities were observed in industry payments to PDs compared to non-PDs, especially in food and beverage, and educational activities. PDs initially received more than double the research payments compared to non-PDs in the early years. This disparity reduced significantly by 2021, reflecting a move towards more equitable research funding. The substantial payment to PDs reflects their significant role in thoracic surgery, yet raises concerns regarding potential influence on trainees. These findings underscore the need for increased transparency and measures to address disparities in industry support, particularly concerning gender and specialty.

Do Fellowship-educated Military Orthopaedic Oncologists Who Practice in Military Settings Treat a Sufficient Volume of Patients to Maintain Their Oncologic Expertise?

Fellowship-trained orthopaedic oncologists in the US military provide routine clinical care and also must maintain readiness to provide combat casualty care. However, low oncologic procedure volume may hinder the ability of these surgeons to maintain relevant surgical expertise. Other low-volume specialties within the Military Health System (MHS) have established partnerships with neighboring civilian centers to increase procedure volume, but the need for similar partnerships for orthopaedic oncologists has not been examined. The purpose of this study was to characterize the practice patterns of US military fellowship-trained orthopaedic oncologists. We asked the following questions: (1) What are the diagnoses treated by US military fellowship-trained orthopaedic oncologists? (2) What are the procedures performed by US military fellowship-trained orthopaedic oncologists? We queried the Military Data Repository, a centralized repository for healthcare data for all healthcare beneficiaries (active duty, dependents, and retirees) within the Defense Health Agency using the MHS's Management and Reporting Tool for all international common procedure taxonomy (CPT) codes and ICD-9 and ICD-10 codes associated with National Provider Identifier (NPI) numbers of active duty, military fellowship-trained orthopaedic oncologists. Fellowship-trained orthopaedic oncologists were identified by military specialty leaders. Then, we identified all procedures performed by the orthopaedic oncologist based on NPI numbers for fiscal years 2013 to 2022. We stratified the CPT codes by top orthopaedic procedure categories (such as amputation [performed for oncologic and nononcologic reasons], fracture, arthroplasty, oncologic) based on associated ICD codes. These were then tabulated by the most common diagnoses treated. Thirteen percent (796 of 5996) of the diagnoses were oncologic, of which 45% (357 of 796) were malignant. Forty-four percent (158 of 357) of the malignancies were primary and 56% (199 of 357) were secondary; this translates to an average of 2 patients with primary and 2.5 patients with secondary malignancies treated per surgeon per year. During the study period, nine orthopaedic oncologists performed 5996 orthopaedic procedures, or 74 procedures per surgeon per year. Twenty-one percent (1252 of 5996) of the procedures were oncologic; the remaining procedures included 897 arthroplasties, 502 fracture-related, 275 amputations for a nononcologic indication, 204 infections, 142 arthroscopic, and 2724 other procedures. Although military orthopaedic oncologists possess expert skills that are directly translatable to combat casualty care and operational readiness, within MHS hospitals they treat relatively few patients with oncologic diagnoses, and less than one-half of those involve malignancies. Despite postgraduation procedure volume raining stable over the last decade, it is unknown how many new patient visits for oncologic diagnoses and how many corresponding tumor procedures are necessary to maintain competence or build confidence after musculoskeletal oncology fellowship training. It is important to note that there are no military orthopaedic oncology fellowships, and all active duty orthopaedic oncologists undergo training at civilian institutions. Military-civilian partnerships with high-volume cancer centers may enable military orthopaedic oncologists to work at civilian cancer centers to increase their oncologic volume to ensure sustainment of operationally relevant knowledge, skills, and abilities and improve patient care and outcomes.

Early Adoption of Expanded Gender Options in National Provider Identifiers

This study examines the prevalence and characteristics of US clinicians who registered for a National Provider Identifier and selected expanded gender options after these new options became available in April 2024.

Disparities in Spatial Access to Sleep Health Care in the United States: A Population-Based Geospatial Analysis

ObjectivesTo examine spatial access to sleep health care in the United States and investigate associations with demographic and socioeconomic characteristics, thereby identifying high-risk communities with limited spatial access to sleep health service. DesignA cross-sectional population-based geospatial analysis. Settings and ParticipantsResidents in US Census tracts across the 48 contiguous states, Alaska, and Hawaii. MethodsThe 2020 American Community Survey 5-year estimates, 2010 rural-urban commuting area codes, 2020 Area Deprivation Index, and sleep care provider locations from the National Provider Identifier file were used to assess the spatial access and related demographic/socioeconomic characteristics. Spatial access was measured by spatial access ratio using enhanced 2-step floating catchment area methods. The associations were investigated using logistic regression analysis and multivariate linear regression analysis. ResultsA total of 45.8 million residents experienced low spatial access to sleep health care. Spatial access decreased in rural and high Area Deprivation Index areas, and in areas characterized by higher population with uninsured status, vehicle unavailability, internet unavailability, cognitive difficulties, and hearing difficulties. With a 10% increase in the percentage of the racial minority (non-white) population, metropolitan census tracts experienced an increase in spatial access (3.268%), whereas micropolitan (−1.526%) and rural (−4.493%) areas experienced a decrease in spatial access. Similar findings were observed within the ethnic minority (Hispanic or Latino) population. Conclusions and ImplicationsDisparities exist in spatial access to sleep health care across the United States, especially for disadvantaged individuals. Racial/ethnic minorities exhibit contrasting spatial access patterns in urban and rural areas, with those in rural areas facing more challenges in spatial access to sleep health care.

The Geographic Distribution of Vascular Surgeons and Trainees by State in 2023

Approximately 1.4 vascular surgeons/100,000 persons are estimated to fulfill current patient needs in the United States (US), but an ongoing shortage exists. The aims of this study are to provide an updated nationwide state-by-state workforce analysis and compare the distribution of practicing vascular surgeons and training opportunities. Vascular surgeons in the US were identified using the National Provider Identifier registry in 2023. Only board-certified and actively licensed vascular surgeons were included. To estimate the number of vascular surgery graduates per year in each state, integrated residency and fellowship-matched positions (trainees) were ascertained from the National Resident Matching Program website. Surgeons and trainees were totaled by state, and densities were calculated using the 2020 US Census Bureau state populations. These two cohorts were also examined together using simple linear regression and geographic mapping. This study included 3399 board-certified vascular surgeons and 228 newly matched trainees. The average densities of vascular surgeons and trainees in the US are 1/100,000 persons and 0.06/100,000 persons, respectively. The five states with the lowest densities of vascular surgeons are AR, ND, NV, OK, and WY, averaging 0.4/100,000 persons. Eight states (AK, ID, KS, ND, NM, NV, RI, WY) had zero training programs offering positions in 2023 and ranked in the lowest quartile for the number of practicing vascular surgeons (Figure 1). Simple linear regression demonstrated a statistically significant correlation between state rates of vascular surgeons and trainees (p < 0.001). States with zero training positions also have the fewest vascular surgeons per capita. Statewide attention to expanding vascular surgery training opportunities targeted in these areas could positively impact the current maldistribution and shortage of vascular surgeons.

The Supply of Surgical Specialists and Subspecialists to the U.S. Medicare Population: National Trends from 2013 to 2019.

The U.S. population is rapidly aging. The supply of surgeons needed to meet this demand should be evaluated. This study evaluated the trends in supply of Medicare surgeons by specialty and by U.S. state and region. All surgeons associated with a National Provider Identifier for cardiothoracic surgery, colorectal surgery, general surgery, gynecologic oncology, hand surgery, neurosurgery, obstetrics-gynecology, ophthalmology, oral and maxillofacial surgery, orthopedic surgery, otolaryngology, plastic and reconstructive surgery, surgical oncology, urology, and vascular surgery from 2013 to 2019 on the Centers for Medicare & Medicaid Services website were included. The absolute number of physicians was adjusted per 100,000 Medicare beneficiaries. Annual change was calculated by linear regression model, and the compound annual growth rate (CAGR) was calculated per specialty. The absolute number of physicians per 100,000 beneficiaries increased in 6 of 15 specialties during the study period. Vascular surgery had the largest annual increase (+0.23; CAGR, +2.75%), and obstetrics-gynecology had the largest annual decrease (-1.08; CAGR, -1.44%). Surgical oncology showed the largest positive CAGR (+4.20%). Oral and maxillofacial surgery had the largest negative CAGR (-2.86%). The Northeast was above the national average in supply for each specialty. The Midwest had the most specialties with positive CAGRs. The South did not meet the national average for physicians in any specialty. This analysis of 15 surgical specialties provides important context to predicted physician shortages to the Medicare population. The study found geographic variation by region across specialty, which has important implications for health care planning from the level of undergraduate medical education to provision of hospital resources. Overall, the supply of surgeons across all specialties may not be sufficient to meet the demand of the rapidly aging U.S. population. Future study is needed to evaluate why surgeons are leaving the Medicare program.

Processing and validation of inpatient Medicare Advantage data for use in hospital outcome measures.

To determine the feasibility of integrating Medicare Advantage (MA) admissions into the Centers for Medicare & Medicaid Services (CMS) hospital outcome measures through combining Medicare Advantage Organization (MAO) encounter- and hospital-submitted inpatient claims. Beneficiary enrollment data and inpatient claims from the Integrated Data Repository for 2018 Medicare discharges. We examined timeliness of MA claims, compared diagnosis and procedure codes for admissions with claims submitted both by the hospital and the MAO (overlapping claims), and compared demographic characteristics and principal diagnosis codes for admissions with overlapping claims versus admissions with a single claim. We combined hospital- and MAO-submitted claims to capture MA admissions from all hospitals and identified overlapping claims. For admissions with only an MAO-submitted claim, we used provider history data to match the National Provider Identifier on the claim to the CMS Certification Number used for reporting purposes in CMS outcome measures. After removing void and duplicate claims, identifying overlapped claims between the hospital- and MAO-submitted datasets, restricting claims to acute care and critical access hospitals, and bundling same admission claims, we identified 5,078,611 MA admissions. Of these, 76.1% were submitted by both the hospital and MAO, 14.2% were submitted only by MAOs, and 9.7% were submitted only by hospitals. Nearly all (96.6%) hospital-submitted claims were submitted within 3 months after a one-year performance period, versus 85.2% of MAO-submitted claims. Among the 3,864,524 admissions with overlapping claims, 98.9% shared the same principal diagnosis code between the two datasets, and 97.5% shared the same first procedure code. Inpatient MA data are feasible for use in CMS claims-based hospital outcome measures. We recommend prioritizing hospital-submitted over MAO-submitted claims for analyses. Monitoring, data audits, and ongoing policies to improve the quality of MA data are important approaches to address potential missing data and errors.

Industry relationships with interventional radiologists: Who are the high payment physicians?

PurposeTo identify characteristics of interventional radiologists receiving more than $100,000 in general industry payments over a 5-year period (2017-2021). MethodsThe Open Payments database was queried to identify interventional radiologists who received more than $100,000 in consulting fees, speaker fees, education, and/or gifts over a 5-year period from 2017 to 2021. The national provider identifier registry, Scopus, and a web-based search were used to identify physician characteristics, such as demographics, research profile, leadership positions, and social media presence. ResultsFrom 2017-2021, 125 interventional radiologists received cumulative payments greater than $100,000 in consulting fees, speaker fees, education, and gifts. For this subset of physicians, the median (IQR) cumulative payment value was $214,380 ($141,812 - $383,740), and the total payment value was $40 million. While the highest-paid subset of physicians represented only 3 % (125/4272) of all US interventional radiologists paid by industry, the total payment value represented 66 % ($40,039,610.08/$60,859,025) of the total payment value among all interventional radiologists. 47 % (59/125) had faculty appointments and 30 % (37/125) had hospital leadership positions. 22 % (27/125) were clinical practice guideline authors, while 18 % (23/125) served on journal editorial boards and 12 % (15/125) had positions in specialty association leadership. Castle Connolly recognized 26 % (32/125) as top doctors. Among the 96 % (120/125) with published research in the past 5 years, the median (IQR) H-index was 17 (7-31). 38 % (48/125) had a presence on Twitter with a median (IQR) Kardashian index of 2.03 (0.48-6.16). ConclusionA small subset of interventional radiologists receive large payments from drug and medical device companies. These physicians are leaders in their field with influence in hospitals, research, associations, and social media. Further work is needed to understand how the concentration of these payments affects decisions in clinical practice and policy.

Evolution of Pediatric Critical Care Medicine Physicians Clinical and Academic Profile by Gender.

To examine career trajectory and academic profile of Pediatric Critical Care Medicine (PCCM) physicians, with special focus on gender differences. Observational cross-sectional study of PCCM fellowship graduates using publicly available data. Publicly available databases including National Provider Identifier registry, American Board of Pediatrics, Doximity, official hospital websites, and Scopus. Two thousand one hundred twenty-nine PCCM fellowship graduates employed in clinical positions in U.S. practice locations. None. Physician demographic characteristics included gender and time since fellowship completion. Current career and academic characteristics included employment data, publication productivity (h-index), and academic rank. Data from 2129 career PCCM physicians was included, with recent graduates showing a notable increase in female representation. Workplace characteristics revealed that most PCCM physicians worked in university-affiliated hospitals, with higher percentages of female physicians working in university-affiliated hospitals compared with male physicians. The study also highlighted significant gender disparities in academic metrics, with male physicians having higher h-indices (3 vs. 2; p < 0.001) and more publications (6 vs. 4; p < 0.001) than their female counterparts across various career phases. Additionally, the analysis showed gender differences in academic rank, with a higher proportion of female faculty holding assistant and associate professor ranks (58.2% vs. 47.5%; p < 0.001), while a greater percentage of male faculty held the rank of professor (20.2% vs. 11.1%; p < 0.001). Multiple variable regression analysis identified both male gender and time since fellowship graduation as independently associated with a physician's h-index, while only time since fellowship graduation was linked to current academic rank. This is the first analysis of career and academic characteristics of practicing PCCM physicians, additionally studying the association of gender and career trajectory. Gender discrepancy was seen in employment hospital characteristics, h-indices, and academic rank. Additional studies are required to further explore the impact of gender on career trajectory.

Medicaid Acceptance Varies by Physician Seniority and Specialty in California.

Given varied insurance acceptances and differing pay between insurances, our objective was to examine the number of California physicians enrolled in Medicare and Medicaid (Medi-Cal), stratified by specialty and graduation year. Medi-Cal and Medicare providers were extracted from publicly available databases (Centers for Medicare & Medicaid Services and California Health and Human Services) and were subsequently merged into one dataset using National Provider Identifier. From there, we stratified physicians by specialty and graduation year. We found that emergency medicine, radiology, pathology, anesthesiology, general surgery, and internal medicine had the highest percent of Medi-Cal-accepting physicians, whereas dermatology, psychiatry, physical medicine & rehabilitation, and plastic & reconstructive surgery physicians had the lowest. There also appears to be an inverse relationship between acceptance of Medi-Cal and earlier year of graduation (P < 0.05). This study demonstrated striking variability in Medi-Cal acceptance based upon physician years in practice and specialty. Older, experienced physicians, as well as physicians of certain specialties, are less likely to accept Medi-Cal.

Identifying states for targeted alloHCT access initiatives using social vulnerability, physician density, and unmet need.

1528 Background: Access to allogeneic hematopoietic cell transplantation (alloHCT) is limited by many factors, with only 1 in 3 patients who may need a transplant receiving one. This study examined associations between social vulnerability index (SVI), physician density (PD), and alloHCT unmet need across the United States (U.S.) to identify geographic areas that may be most at-risk of access challenges. Methods: A retrospective analysis aggregated public data across 3,141 U.S. counties, including: SVI [Centers for Disease Control and Prevention/Agency for Toxic Substances and Disease Registry]; National Provider Identifier [Center for Medicare and Medicaid Services] data for all registered hematology-oncology and HCT physicians; and 2017 – 2021 alloHCT unmet need [Center for International Blood and Marrow Transplant Research (CIBMTR), NMDP]. PD was defined as providers per 10,000 population. All variables were collapsed into ordinal categories (very low, low, moderate, high) based on quartiles. Counties with moderate/high SVI and unmet need and low/very low PD were defined as at-risk. By state, linear regression and mediation analysis assessed exploratory relationships. Results: Among 396 counties defined as at-risk, top states are shown (Table). State (n=51) percent unmet need was correlated with SVI (r=0.494, p&lt;0.001) and PD (r=-0.295, p=0.036). Univariate analysis revealed SVI (b=-0.223, p&lt;0.001) and PD (b=-0.187, p=0.036) as predictors of unmet need. However, multivariate regression showed only SVI as significant when included with PD. Race/ethnicity as 1 of 4 SVI subthemes (socioeconomic status [SES], household characteristics [including age], race/ethnicity, and housing/transportation) was not correlated with PD, but all other themes were. SES and household characteristics were found to fully mediate the relationship between PD and unmet need. Conclusions: This study can help prioritize targeted initiatives through a better understanding of how SVI, PD, and unmet need relate to alloHCT access. This study cannot draw causal conclusions and uses multiple population-level data sources. However, data can examine trends on a regional level within at-risk states to allocate resources to overcome barriers to alloHCT, with special attention on SES and household factors like age. Relationships between variables should be further examined. [Table: see text]

Demographic Disparities in Drive Times to the Nearest Audiologist in the United States.

Audiological services are underused, possibly because patients need to drive long distances to see a provider. In this study, we measured the association of drive times to the nearest audiologist with population density, income, ethnicity, race, and distance to the nearest audiology graduate program. Drive times for each census block group to the nearest audiologist were measured using census data, the National Provider Identifier Registry, and a geographic analyzing tool called ArcGIS for all block groups within the United States. The association between drive times and population density, income, ethnicity, race, and audiology program distance was evaluated with a population density-matched case-control study and multiple linear regression analyses. Approximately 5.29 million Americans need to drive at least 1 hr to visit their closest audiologist. The 10% most rural-dwelling Americans drive an average of 33.8 min. The population density-matched case-control study demonstrated that percent below poverty, percent identifying as Hispanic, and travel times to the nearest audiology program were all significantly higher in census block groups with high drive times to the nearest audiologist. An average of 7.96% of individuals in census block groups with low drive times identified as Hispanic, but 18.8% identified as Hispanic in high drive time groups. The multiple linear regression showed that the effect of demographics and distance to the nearest audiology program was highest in rural areas. In both analyses, adjusting for poverty did not drastically change the effect of percent identifying as Hispanic on drive times. Long drive times restrict access to audiological care for those who live in rural areas. This restriction disproportionately affects those in rural areas who identify as Hispanic or have low income.

Office procedures for older adults by physician associates and nurse practitioners.

We hypothesized that physician associate (PA) and nurse practitioner (NP) procedural roles are expanding. We sought to describe ambulatory procedures these professionals performed in 2021 for older adults. Retrospective observational cohort study of Medicare Part B data. US Bureau of Labor Statistics data were used to provide overall PA and NP employment context. Medicare Part B databases were probed for outpatient events by PAs and NPs using a modified list of the Council of Academic Family Medicine's recommended clinical procedures that focused on 29 procedures organized into 9 categories called procedure clusters. These procedures were linked to Current Procedural Terminology codes and PA and NP National Provider Identifier codes in Medicare Part B and then tabulated and analyzed for 2021. The Bureau of Labor Statistics provided NP and PA employment trends for context. The trend of the procedures and providers spanning 2014-2021 was analyzed. In 2021, 23,581 NPs and PAs filed 9.6 million Medicare Part B enrollee procedure claims. Most procedures (96%) involved skin or the musculoskeletal system. PAs filed more than twice as many claims for skin and musculoskeletal procedures as NPs, and NPs filed 1.25 times as many as PAs for the eye, ear, nose, and throat; pulmonary; genitourinary; gastrointestinal-colorectal; and women's health categories. From 2014 through 2021, the number of PAs and NPs in clinical practice increased by 72%, and the number of those who filed procedure claims increased by 74%. Overall, PAs performed more skin and musculoskeletal procedures than NPs, and NPs performed more procedures in the other 7 procedure clusters than PAs. PA and NP employment growth does not fully explain these observations. We suggest that outpatient procedural task-shifting activity presents an area for further research.

Gender differences among shoulder arthroplasty surgeons: past, present, and future

Reducing differences in the gender representation of shoulder arthroplasty surgeons may help optimize patient care. This work aims to determine (a) the current gender distribution of surgeons performing shoulder arthroplasty, (b) how gender relates to practice patterns among shoulder arthroplasty surgeons, and (c) how gender distribution has been changing over time. The Medicare Provider Utilization and Payment Data for years 2012-2020 was utilized to identify orthopedic surgeons performing anatomic and reverse total shoulder arthroplasty (current procedural terminology [CPT] code 23472). The dataset provides self-reported gender, credentials, national provider identifier (NPI), annual volume for all procedures (based upon CPT) that were performed at least 11 times in the calendar year, and location for all included providers. The dataset was linked to the Medicare physician compare dataset using NPI numbers to determine hospital affiliations, year of medical school graduation, and graduating medical school. All included hospitals were queried to determine academic status (affiliated orthopedic residency or fellowship program). The American Shoulder and Elbow Surgeons (ASES) directory was reviewed to determine gender breakdown of current members. The number of surgeons performing at least 11 shoulder arthroplasty annually increased from 821 (13 females; 1.6%) in 2012 to 1,840 (53/1,840 females; 2.9%; p=0.05) in 2019. One female ranked in the top 100 surgeons by shoulder arthroplasty volume in 2012 and in 2020. Female surgeons graduated more recently from medical school (mean: 2005) compared to male surgeons (mean: 1997; p<0.001). About 10% of female (10.8%, 12/111) and male surgeons (9.1%, 229/2528) practiced at hospitals with orthopedic residents (p=0.50). Female surgeons performing shoulder arthroplasty were less likely than males to perform total knee arthroplasty (29.4% versus 54.1%; p<0.001) and total hip arthroplasty (12.6% versus 34.7%; p<0.001). There were 86 female members of the ASES (6.7%; 86/1275), with a significant difference in the proportion of women in differing membership categories (p=0.017). A diverse cohort of high-volume shoulder replacement surgeons is integral to delivering high-quality shoulder arthroplasty. Currently, the proportion of women performing high volume shoulder replacement in the US is small, with little improvement in recent years. However, women performing shoulder arthroplasty are younger, often involved in academic practices, and the membership of the ASES is increasingly female. Continued efforts to promote orthopedics, and mentor women residents and medical students interested in shoulder surgery, may bring real change to the gender differences among shoulder replacement surgeons over the coming years.

Assessment of the gender gap in urology industry payments: An Open Payments Program data analysis.

The Open Payments Program (OPP), established in 2013 under the Sunshine Act, mandated medical device and pharmaceutical manufacturers to submit records of financial incentives given to physicians for public availability. The study aims to characterize the gap in real general and real research payments between man and woman urologists. The study sample included all urologists in the United States who received at least one general or research payment in the OPP database from 2015 to 2021. Recipients were identified using the National Provider Identifier and National Downloadable File datasets. Payments were analyzed by geography, year, payment type, and years since graduation. Multivariable analysis on odds of being in above the median in terms of money received was done with gender as a covariate. This analysis was also completed for all academic urologists. There was a total of 15,980 urologists; 13.6% were woman, and 86.4% were man. Compared to man urologists, woman urologists were less likely to be in the top half of total payments received (odds ratio [OR] 0.62) when adjusted for other variables. When looking at academic urologists, 18.1% were woman and 81.9% were man. However, woman academic urologists were even less likely to be in the top 50% of payments received (OR 0.55). This study is the first to characterize the difference in industry payments between man and woman urologists. The results should be utilized to educate physicians and industry, in order to achieve equitable engagement and funding for woman urologists.

Factors influencing geographic gender disparity in neurosurgery: a nationwide geospatial clustering analysis.

Women neurosurgeons (WNs) continue to remain a minority in the specialty despite significant initiatives to increase their representation. One domain less explored is the regional distribution of WNs, facilitated by the hiring practices of neurosurgical departments across the US. In this analysis, the authors coupled the stated practice location of WNs with regional geospatial data to identify hot spots and cold spots of prevalence and examined regional predictors of increases and decreases in WNs over time. The authors examined the National Provider Identifier (NPI) numbers of all neurosurgeons obtained via the National Plan and Provider Enumeration System (NPPES), identifying the percentage of WNs in each county for which data were appended with data from the US Census Bureau. Change in WN rates was identified by calculating a regression slope for all years included (2015-2022). Hot spots and cold spots of WNs were identified through Moran's clustering analysis. Population and surgeon features were compared for hot spots and cold spots. WNs constituted 10.73% of all currently active neurosurgical NPIs, which has increased from 2015 (8.81%). Three hot spots were found-including the Middle Atlantic and Pacific divisions-that contrasted with scattered cold spots throughout the East Central regions that included Memphis as a major city. Although relatively rapidly growing, hot spots had significant gender inequality, with a median WN percentage of 11.38% and a median of 0.61 WNs added to each respective county per year. The authors analyzed the prevalence of WNs by using aggregated data from the NPPES and US Census Bureau. The authors also show regional hot spots of WNs and that the establishment of WNs in a region is a predictor of additional WNs entering the region. These data suggest that female neurosurgical mentorship and representation may be a major driver of acceptance and further gender diversity in a given region.

Pharmacists Colocated With Primary Care Physicians: Understanding Delivery of Interprofessional Primary Care.

While evidence supports interprofessional primary care models that include pharmacists, the extent to which pharmacists are working in primary care and the factors associated with colocation is unknown. This study aimed to analyze the physical colocation of pharmacists with primary care providers (PCPs) and examine predictors associated with colocation. This is a retrospective cross-sectional study of pharmacists and PCPs with individual National Provider Identifiers in the National Plan and Provider Enumeration System's database. Pharmacist and PCP practice addresses of the health care professionals were geocoded, and distances less than 0.1 miles were considered physically colocated. In all, 502,373 physicians and 221,534 pharmacists were included. When excluding hospital-based pharmacists, 1 in 10 (11%) pharmacists were colocated with a PCP. Pharmacists in urban settings were more likely to be colocated than those in rural areas (OR=1.32, CI: 1.26-1.38). Counties with the highest proportion of licensed pharmacists per 100,000 people in the county had higher colocation (OR=1.38, CI: 1.32-1.45). Colocation was significantly higher in states with an expanded scope of practice (OR 1.37, CI: 1.32-1.42) and those that have expanded Medicaid (OR 1.07, CI: 1.03-1.11). Colocated pharmacists more commonly worked in larger physician practices. Although including pharmacists on primary care teams improves clinical outcomes, reduces health care costs, and enhances patient and provider experience, colocation appears to be unevenly dispersed across the United States, with lower rates in rural areas. As the integration of pharmacists in primary care continues to expand, knowing the prevalence and facilitators of growth will be helpful to policymakers, researchers, and clinical administrators.

Abstract B094: Geographic accessibility to obstetricians and gynecologists is associated with incidence of live birth among Black adolescent and young adult female cancer survivors in Texas

Abstract Objective: To assess incidence of live birth after cancer diagnosis among Black adolescent and young adult women (AYA) age 15-39 years at diagnosis, and evaluate whether incidence varies by exposure to racial residential segregation, neighborhood poverty, or geographic accessibility to obstetricians/gynecologists. Methods: Black AYA women diagnosed with cancer between January 1, 1995 and December 31, 2015 were identified using population-based data from the Texas Cancer Registry. These data were linked with live birth certificates through December 31, 2016 to identify the first live birth after diagnosis. We measured three neighborhood characteristics using the 2010 U.S. Census: 1) Black racial residential segregation, using the Index at the Concentration of Extremes; 2) percent of the population living in poverty; and 3) geographic accessibility to obstetricians/gynecologists, calculated using National Provider Identifier data as the supply of healthcare and U.S. Census data as the demand for healthcare. We estimated cumulative incidence of live birth accounting for the competing risk of death, overall and by low vs. high (≥ 20%) poverty and sample-based quartiles of racial residential segregation and geographic accessibility. Results: We identified 689 first live births to 7,921 Black AYA women after cancer diagnosis. Two-thirds of the sample were age 30 years or older at diagnosis: 27.3% were aged 30-34 and 45.6% were aged 35-39. The most common cancer types were breast (34.3%), gynecologic (16.4%), lymphoma (9.8%), thyroid (8.5%), and gastrointestinal (7.5%). Stage at diagnosis was as follows: local (39.6%), regional (27.8%), distant (19.3%), and missing (13.4%). Five- and ten- year cumulative incidence of live birth after cancer diagnosis was 6.3 (95% confidence interval [CI]: 5.8-6.9) and 9.1 (95% CI: 8.4-9.8), respectively. Incidence of live birth was not associated with racial residential segregation or neighborhood poverty. Cumulative incidence of live birth varied by geographic accessibility to obstetricians/gynecologists (p=.046); however, nonlinear patterns were observed starting around five years after diagnosis, such that those residing in quartiles 1 (lowest accessibility) and 3 had lower incidence of live birth compared to those in quartiles 2 and 4 (highest accessibility). Discussion: To our knowledge, this is the first study examining the association of neighborhood characteristics and incidence of live birth in a population-based sample of Black AYA women after cancer diagnosis. We did not observe associations for racial residential segregation or neighborhood poverty. This may indicate that characteristics such as current health status, types of treatment received, or treatment side effects are more relevant for live birth after diagnosis. Geographic accessibility to obstetricians/gynecologists was associated with live birth, but in a nonlinear fashion. Future analyses will assess spatial patterns and potential confounders, such as urban or rural residence, which may account for non-linearity in this association. Citation Format: Sandi L. Pruitt, Jennifer S. Wang, Kevin A. Henry, Lynn N. Ibekwe, Caitlin C. Murphy. Geographic accessibility to obstetricians and gynecologists is associated with incidence of live birth among Black adolescent and young adult female cancer survivors in Texas [abstract]. In: Proceedings of the 16th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2023 Sep 29-Oct 2;Orlando, FL. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2023;32(12 Suppl):Abstract nr B094.

Factors Associated with Treatment Receipt in Medicare Beneficiaries Diagnosed with Acute Myeloid Leukemia

Background: The treatment a patient with AML receives may be influenced by where the patient is diagnosed and the physician making the initial diagnosis. Such factors could be targeted for intervention to help ensure patients receive optimal treatment; however, data constraints have previously limited a complete examination of patient, physician and hospital factors associated with treatment for AML. This study aimed to investigate the association of patient, hospital, and physician factors with treatment receipt for patients diagnosed with AML. Treatment receipt included allogeneic hematopoietic cell transplant (alloHCT) or chemotherapy without alloHCT among patients who received a National Marrow Donor Program (NMDP) donor search (search). Methods: Centers for Medicare and Medicaid (CMS) Medicare administrative claims data from 2010 to 2018 were linked to NMDP Donor Search data and to publicly available CMS and National Provider Identifier physician and hospital datasets. Patients aged 65-74 diagnosed with AML between 2010 and 2017 and enrolled in fee-for-service (Part A and B) Medicare for at least one year after diagnosis or until death, were included. The treatment groups (alloHCT and search) were identified using diagnosis and procedure codes. A multivariable hierarchical logistic regression procedure was performed to determine factors associated with treatment receipt, with hospital as a random effect. Models were adjusted for patient, hospital and physician characteristics identified at the time of diagnosis. Patients missing physician and hospital characteristics were excluded. Individuals with a racial/ethnic background of Black/African-American, Asian/Pacific Islander, Hispanic, American Indian/Alaska Native, and Other were grouped due to small numbers. All analyses were performed using Statistical Analysis Software (SAS ®) Enterprise Guide 7.1. Results: A total of 916 patients met eligibility criteria: 554 (60%) received alloHCT; 362 (40%) received search. The majority of patients in both groups were Non-Hispanic White and were age 65-69 years. A multivariable model demonstrated the variables associated with receipt of alloHCT (Figure 1). Characteristics significantly associated with decreased odds of receiving alloHCT were sex (male compared to female), race/ethnicity (a combined category of Black/African-American, Asian/Pacific Islander, Hispanic, American Indian/Alaska Native, and Other compared to Non-Hispanic White), living in an area with a lower percentage of population with a college education, age (71-75 compared to 65-69 years), and chemotherapy provision (chemotherapy not compared to provided by staff). Conclusion: This study used novel linked datasets to identify the association of patient, hospital, and physician characteristics at time of diagnosis with receipt of alloHCT, compared to patients who received a search but not an alloHCT. Notably, patient characteristics, and the hospital characteristic of provision of chemotherapy by hospital staff were associated with alloHCT receipt. Donor availability may contribute to the decreased odds of alloHCT by race/ethnicity, but studies to increase HLA-mismatched unrelated alloHCT are helping to decrease this barrier. Neighborhood education attainment was used as a proxy for socioeconomic status (SES), and SES has been associated with access to care. Ensuring treatment information is accessible and available in plain language may help patients considering different treatment options. Claims data is not collected for research, and has some inherent limitations, including the lack of disease severity, cytogenetics, patient preferences, and an algorithm was used to identify diagnosing physician and hospital. Additionally, this analysis includes patients who were able to access a transplant center to receive a search or alloHCT. Next steps will compare characteristics of those who received chemotherapy but did not receive a search to those who received a search and those who received an alloHCT. Study results will be used to help inform strategies aimed at improving access to treatment for patients diagnosed with AML.

Evaluation of a method to identify midwives in national provider identifier data

ObjectivesComparison of national midwife workforce data from the National Provider Identifier file determined it undercounted midwives compared to national data available from the American Midwifery Certification Board. This undercount may be due to the existence of three taxonomy categories for midwives when registering for the National Provider Identifier. The objective of this study was to obtain an accurate count of advanced practice midwives using the National Provider Identifier Data.MethodsA recode strategy was created using the NPPES Data Dissemination File for November 7, 2021. The strategy identified advanced practice midwives using education and certification information provided in the “credentials” field. The strategy was validated using the NPPES Data Dissemination File for August 7, 2022 and the gold standard was the American Midwifery Certification Board count of midwives by state for August, 2022. Validation compared the accuracy and precision of the recode to the accuracy and precision of using the advanced practice midwife taxonomy category.ResultsThe recode strategy improved the accuracy and precision of the count of advanced practice midwives compared to the identification of advanced practice midwives using the advanced practice midwife taxonomy category.Conclusions for practiceRecoding the NPPES Data Dissemination File provides a more accurate and precise count of advanced practice midwives than relying on the existing advanced practice midwife taxonomy classification. Researchers can use the NPPES Data Dissemination File when studying the midwifery workforce.