Dr. Douglas Grunwald, MD

With 15 years of practice, Dr. Douglas Grunwald is an established gastroenterology provider, MD, after earning their medical degree at University Of Chicago, Pritzker School Of Medicine in 2011. Dr. currently practices at in Hamden, Connecticut. Their National Provider Identifier (NPI) is 1154616001, 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. Douglas Grunwald as a lower-volume gastroenterology provider, treating approximately 281 Medicare beneficiaries and delivering 4K 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. Douglas Grunwald received $757 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.