Dr. Bartholomew Sak, MD

With 20 years of practice, Dr. Bartholomew Sak is an established internal medicine provider, MD, after earning their medical degree at Other in 1993. Dr. currently practices across 4 facilities, including Mercy Health Partners - Physician Specialist in Muskegon, Michigan. Their National Provider Identifier (NPI) is 1093755167, 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. Bartholomew Sak as a lower-volume internal medicine provider, treating approximately 374 Medicare beneficiaries and delivering 809 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.

Under the Physician Payments Sunshine Act, CMS reports that Dr. Bartholomew Sak received $205 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.