Dr. Roger Garrison, DO

With 20 years of practice, Dr. Roger Garrison is an established internal medicine provider, DO, after earning their medical degree at Oklahoma State University College Of Osteopathic Medicine in 1999. Dr. currently practices across 5 facilities, including Riverside University Health System-medical Center in Moreno Valley, California. Their National Provider Identifier (NPI) is 1013941475, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.

CMS Medicare data shows Dr. Roger Garrison as a lower-volume internal medicine provider, treating approximately 69 Medicare beneficiaries and delivering 191 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.