Internal Medicine in Muskegon, MI

123 active Internal Medicine providers practice in Muskegon, Michigan according to the latest NPPES snapshot. Profiles include the NPI number, taxonomy code, license state, and practice address.

Internal Medicine providers in Muskegon, MI
NPI	Name	Type	Specialty	Location
1982615357	Amy Dean	Individual	Internal Medicine Physician	Muskegon, MI
1649307364	Andrew C. Kleaveland, M.D., P.C.	Organization	Pulmonary Disease Physician	Muskegon, MI
1508961384	Andrew Kleaveland	Individual	Pulmonary Disease Physician	Muskegon, MI
1992812952	Andrew Welch	Individual	Gastroenterology Physician	Muskegon, MI
1356342448	Bao-Min Twu	Individual	Nephrology Physician	Muskegon, MI
1508863457	Barry Kram	Individual	Nephrology Physician	Muskegon, MI
1427001536	Bruce Olson	Individual	Infectious Disease Physician	Muskegon, MI
1154315505	Daniel West	Individual	Interventional Cardiology Physician	Muskegon, MI
1538245501	David Bonnema	Individual	Interventional Cardiology Physician	Muskegon, MI
1467468934	Dennis Desimone	Individual	Internal Medicine Physician	Muskegon, MI
1184601957	Don Campbell	Individual	Internal Medicine Physician	Muskegon, MI
1871570531	Douglas Hall	Individual	Geriatric Medicine (Internal Medicine) Physician	Muskegon, MI
1518078088	Douglas Hoch	Individual	Pulmonary Disease Physician	Muskegon, MI
1891753224	Emily Conley	Individual	Nephrology Physician	Muskegon, MI
1083804280	Eric Shafer	Individual	Cardiovascular Disease Physician	Muskegon, MI
1447244819	Eric Stuart	Individual	Cardiovascular Disease Physician	Muskegon, MI
1134120108	Frank Sprague	Individual	Internal Medicine Physician	Muskegon, MI
1215921614	George Renton	Individual	Internal Medicine Physician	Muskegon, MI
1235311382	Great Lakes Internal Medicine, PC	Organization	Internal Medicine Physician	Muskegon, MI
1285635367	Gregory Downer	Individual	Nephrology Physician	Muskegon, MI
1841242492	Hackley Hospital Fiscal Services	Organization	Infectious Disease Physician	Muskegon, MI
1396886131	Herbert Miller	Individual	Internal Medicine Physician	Muskegon, MI
1154322477	Hernan Lescay	Individual	Internal Medicine Physician	Muskegon, MI
1386735447	Hikmat Halasa	Individual	Internal Medicine Physician	Muskegon, MI
1336184621	Hpcn	Organization	Internal Medicine Physician	Muskegon, MI
1043234719	Hpcn	Organization	Internal Medicine Physician	Muskegon, MI
1508960071	Hpcn	Organization	Gastroenterology Physician	Muskegon, MI
1770673741	Hpcn	Organization	Internal Medicine Physician	Muskegon, MI
1568536621	Hpcn	Organization	Internal Medicine Physician	Muskegon, MI
1407842362	Ionut Oravitan	Individual	Interventional Cardiology Physician	Muskegon, MI
1639137086	James Conley	Individual	Nephrology Physician	Muskegon, MI
1215914023	James Grace	Individual	Internal Medicine Physician	Muskegon, MI
1861483729	Jeffrey Leinicke	Individual	Gastroenterology Physician	Muskegon, MI
1689665549	John Egan	Individual	Gastroenterology Physician	Muskegon, MI
1679786230	John Meek	Individual	Cardiovascular Disease Physician	Muskegon, MI
1770584880	John Ratchford	Individual	Internal Medicine Physician	Muskegon, MI
1982698353	John Skallerup	Individual	Interventional Cardiology Physician	Muskegon, MI
1033102272	Jon Hinderer	Individual	Internal Medicine Physician	Muskegon, MI
1760411599	Joseph Mckenna	Individual	Nephrology Physician	Muskegon, MI
1497940571	Julie Felt	Individual	Internal Medicine Physician	Muskegon, MI
1972571370	Karen Seaver	Individual	Internal Medicine Physician	Muskegon, MI
1003938119	Karen Thornburg	Individual	Internal Medicine Physician	Muskegon, MI
1427035229	Ken Ye	Individual	Internal Medicine Physician	Muskegon, MI
1700863503	Marcela Novakosky	Individual	Internal Medicine Physician	Muskegon, MI
1245224674	Mark Meengs	Individual	Interventional Cardiology Physician	Muskegon, MI
1619978707	Mark Staniforth	Individual	Nephrology Physician	Muskegon, MI
1740233519	Mcclees Clinic	Organization	Infectious Disease Physician	Muskegon, MI
1124042700	Mercy Health Partners Sub-Specialty Services	Organization	Internal Medicine Physician	Muskegon, MI
1629010384	Mercy Specialty Services	Organization	Internal Medicine Physician	Muskegon, MI
1174570303	Michael Bergquist	Individual	Internal Medicine Physician	Muskegon, MI

Frequently asked questions

How many Internal Medicine providers are in Muskegon, MI?

The latest NPPES snapshot lists 123 active Internal Medicine providers with a practice address in Muskegon, Michigan.

How do I check a Internal Medicine provider's NPI in Muskegon?

Open a profile below to see the NPI number, taxonomy code, and practice address, then verify against the official NPPES registry — every profile links directly to the CMS record.

Source: CMS NPPES (public data). Snapshot 2026-07-09.