Internal Medicine in Stillwater, OK

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

Internal Medicine providers in Stillwater, OK
NPI	Name	Type	Specialty	Location
1811928021	Arthur Hagan	Individual	Cardiovascular Disease Physician	Stillwater, OK
1003951385	Associates of Internal Medicine	Organization	Internal Medicine Physician	Stillwater, OK
1588868327	Cathy E Nieman, MD Inc	Organization	Internal Medicine Physician	Stillwater, OK
1578556171	Cathy Nieman	Individual	Internal Medicine Physician	Stillwater, OK
1831130806	Christopher Puckett	Individual	Hematology & Oncology Physician	Stillwater, OK
1851378293	Darren Green	Individual	Internal Medicine Physician	Stillwater, OK
1972790475	G E Emde, MD	Organization	Internal Medicine Physician	Stillwater, OK
1801889373	Gilbert Emde	Individual	Internal Medicine Physician	Stillwater, OK
1033172168	Group Practice Associates, Inc.	Organization	Internal Medicine Physician	Stillwater, OK
1417139924	James Harris	Individual	Cardiovascular Disease Physician	Stillwater, OK
1902860406	Jennifer Ferrell	Individual	Internal Medicine Physician	Stillwater, OK
1528068426	John Williams	Individual	Internal Medicine Physician	Stillwater, OK
1598765497	Jon Johnson	Individual	Internal Medicine Physician	Stillwater, OK
1669678124	Kathleen M Harder MD Pllc	Organization	Internal Medicine Physician	Stillwater, OK
1316926728	Kevin Oltmanns	Individual	Internal Medicine Physician	Stillwater, OK
1932147113	Melchor Lim	Individual	Cardiovascular Disease Physician	Stillwater, OK
1144295429	Michael Strange	Individual	Internal Medicine Physician	Stillwater, OK
1285613299	Michele Macdonnell	Individual	Internal Medicine Physician	Stillwater, OK
1962488742	Sam Earnest	Individual	Internal Medicine Physician	Stillwater, OK
1235246018	Senthil Nachimuthu	Individual	Clinical Cardiac Electrophysiology Physician	Stillwater, OK
1275670432	Seretean Wellness Center	Organization	Internal Medicine Physician	Stillwater, OK
1770507931	Sidney Williams	Individual	Internal Medicine Physician	Stillwater, OK
1841496221	Steve W Cummings MD Pllc	Organization	Internal Medicine Physician	Stillwater, OK
1750365292	Steven Cummings	Individual	Internal Medicine Physician	Stillwater, OK
1124004759	Terry Brown	Individual	Internal Medicine Physician	Stillwater, OK
1972602050	Thomas Swafford	Individual	Gastroenterology Physician	Stillwater, OK
1043373533	Val Gene Iven	Individual	Sports Medicine (Internal Medicine) Physician	Stillwater, OK
1639156672	Woody Jenkins	Individual	Internal Medicine Physician	Stillwater, OK
1366434300	Wynter Kipgen	Individual	Endocrinology, Diabetes & Metabolism Physician	Stillwater, OK

Frequently asked questions

How many Internal Medicine providers are in Stillwater, OK?

The latest NPPES snapshot lists 43 active Internal Medicine providers with a practice address in Stillwater, Oklahoma.

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

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.