Background: The number of patients with cardiac implantable electronic devices (CIEDs) is growing, creating workload for device clinics to manage this population. Remote monitoring of CIED patients is a guidelines-recommended method for optimizing treatment in CIED patients in combination with in-person follow-up. However, the specific steps involved in CIED management, as well as the HCP time required for these activities, are not well understood. The aim of this study was to quantify the clinic staff time requirements associated with the remote and in-person management of CIED patients. Methods: A time and motion workflow evaluation was performed in 6 U.S. CIED clinics. Participating clinics manage an average of 4,217 (range: 870-10,336) CIED patients. The duration of each task involved in CIED management was repeatedly timed, for all device models/manufacturers, during one business week (5 days) of observation at each clinic. Mean time for review of a remote transmission and for an in-person clinic visit were calculated, including all clinical and administrative (e.g., scheduling, documentation) activities related to the encounter. Annual staff time (inclusive of all clinical and administrative staff) for follow-up of 1 CIED patient was modeled using device transmission data for the 6 clinics, clinical guidelines for CIED follow-up, and published literature (Table 1). Results: During 6 total weeks of data collection, 124 in-person clinic visits and 1,374 remote transmission review activities were observed and measured. On average, the total staff time required per remote transmission ranged from 11.9-13.5 minutes (depending on the CIED type), and time per in-person visit ranged from 43.4-51.0 minutes. Including all remote and in-person follow-ups, the estimated total staff time per year to manage one Pacemaker, ICD, CRT, and ICM patient was 2.3, 2.4, 2.4, and 9.3 hours, respectively. Conclusion: CIED patient management workflow is complex and requires significant staff time in cardiac device clinics. Remote monitoring is an efficient complement for in-office visits, allowing for continuous follow-up of patients with reduced staff time required per device check. Future research should examine heterogeneity in patient management processes to identify the most efficient workflow.