Dr. Jan Claassen, MD

With 19 years of practice, Dr. Jan Claassen is an established critical care (intensivists) provider, MD, after earning their medical degree at Other in 1998. Dr. currently practices across 2 facilities, including Trustees Of Columbia University In The City Of New York in New York, New York. Their National Provider Identifier (NPI) is 1073649497, 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. Jan Claassen as a lower-volume critical care (intensivists) provider, treating approximately 67 Medicare beneficiaries and delivering 261 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. Jan Claassen received $330 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.