ObjectivesTo (a) determine potential cost savings of a pharmacy outreach teleservice program conducting Medicare Part D plan reviews for a large population of beneficiaries allowing for comparison of multiple preferences; and (b) explore client demographic comparisons, plan features, and stratification by cost and number of medications. MethodsRetrospective cohort evaluation of a Medicare D review service during open enrollment period (October 15 to December 7, 2012). Reviews were conducted at a university-based pharmacy outreach program in Massachusetts and completed by pharmacists (17%), case managers (52%), and students (31%). Recommendations were created by entering medication regimens into the Medicare.gov plan finder, and factors including deductible, premium, and copayment or coinsurance, formulary restrictions, secondary assistance, and annual cost were considered. A comparison of the overall cost of the client’s 2012 plan in 2013 with that of a lower-cost plan in the 2013 benefit year determined potential cost savings. ResultsDemographic data were available for 1062 individuals, with the majority being women (66%), an overall mean age of 73 years, and most living in a single household. Clients (75%) were taking 5 or more medications. Lower-cost plans were recommended for 61% of clients with a median cost savings valued at $538 per member, per year. Cost was the leading consideration for plan change (87.4%), followed by deductible (32.7%) and premium (30.1%). Cost savings were analyzed by evaluating current plan versus alternate plan by sex, age, client type (repeat vs. referred vs. new), and according to number of medications. Lower-cost plans were identified for 75% of new members. Individuals taking 0-14 medications had a cost savings of approximately $833 per client per year. ConclusionTeleservice pharmacy outreach programs create value by identifying therapeutically comparable alternative plans and reducing plan spending while efficiently consulting for a large number of Medicare Part D beneficiaries statewide.