Dr. Mark Portman, M.D.

In their first decade of practice, Dr. Mark Portman represents the newer generation of emergency medicine providers, M.D., after earning their medical degree at Other in 2017. Dr. currently practices across 7 facilities, including University Of California Davis Medical Center in Sacramento, California. Their National Provider Identifier (NPI) is 1023545340, 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. Mark Portman as a moderate-volume emergency medicine provider, treating approximately 575 Medicare beneficiaries and delivering 984 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. Mark Portman received $27 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.