Dr. Gregory Mumm, M.D.

With 20 years of practice, Dr. Gregory Mumm is an established rheumatology provider, M.D., after earning their medical degree at University Of North Dakota School Of Medicine in 2004. Dr. currently practices at Avera Mckennan in Sioux Falls, South Dakota. Their National Provider Identifier (NPI) is 1548228810, 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. Gregory Mumm as a lower-volume rheumatology provider, treating approximately 490 Medicare beneficiaries and delivering 870 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. Gregory Mumm received $109 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.