Dr. James Mason, M.D.

With 20 years of practice, Dr. James Mason is an established medical oncology provider, M.D., after earning their medical degree at University Of California, San Francisco School Of Medicine in 1984. Dr. currently practices across 2 facilities, including Regents Of The University Of California in La Jolla, California. Their National Provider Identifier (NPI) is 1497717730, 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. James Mason as a moderate-volume medical oncology provider, treating approximately 608 Medicare beneficiaries and delivering 97K services in the most recent reporting year. That panel size indicates balanced experience across typical Medicare conditions.

Under the Physician Payments Sunshine Act, CMS reports that Dr. James Mason received $362 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.