Dr. John Lewison, MD

With 20 years of practice, Dr. John Lewison is an established internal medicine provider, MD, after earning their medical degree at University Of Maryland School Of Medicine in 1993. Dr. currently practices across 7 facilities, including Barton Memorial Hospital in South Lake Tahoe, California. Their National Provider Identifier (NPI) is 1497795678, 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. John Lewison as a lower-volume internal medicine provider, treating approximately 98 Medicare beneficiaries and delivering 336 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.