Internal Medicine in Stillwater, Oklahoma
Data updated monthly · Last refresh September 2026
25 Internal Medicine providers practice in Stillwater, and 52% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Stillwater
Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Brendan Iriele, MDStillwater, OK · No drug or device payments recorded (2025) ·
(310) 773-2396 Dr. Cathy Nieman, MDStillwater, OK · $88 in drug and device payments (2025) ·
(405) 372-4646 Dr. Darren Green, M.D.Stillwater, OK · No drug or device payments recorded (2025) ·
(405) 743-7300 Dr. Doaa Altameemi, MDStillwater, OK · $32 in drug and device payments (2025) ·
(405) 784-5842 Dr. Gilbert Emde, M.D.Stillwater, OK · $428 in drug and device payments (2025) · Telehealth ·
(405) 372-4646 Dr. Gregory Balcerak, DOStillwater, OK · No drug or device payments recorded (2025) ·
(405) 743-7300 Dr. Jaya MallelaStillwater, OK · No drug or device payments recorded (2025) ·
(405) 372-1480 Dr. Jeffrey Wang, MD, PHDStillwater, OK · No drug or device payments recorded (2025) ·
(405) 533-5041 Dr. Jennifer Ferrell, DOStillwater, OK · $2,477 in drug and device payments (2025) ·
(405) 372-1480 Dr. Jennifer Gallaway, ARNPStillwater, OK · No drug or device payments recorded (2025) ·
(405) 533-1332 Dr. John Williams, M.D.Stillwater, OK · $430 in drug and device payments (2025) · Telehealth ·
(405) 377-8000 Dr. Jon Johnson, M.D.Stillwater, OK · $283 in drug and device payments (2025) · Telehealth ·
(405) 377-8000 Dr. Jon Johnson, M.D.Stillwater, OK · $124 in drug and device payments (2025) ·
(405) 377-8000 Dr. Kevin Oltmanns, M.D.Stillwater, OK · $225 in drug and device payments (2025) · Telehealth ·
(405) 743-7300 Dr. Lauren Pendarvis, DOStillwater, OK · No drug or device payments recorded (2025) ·
(405) 372-1480 Dr. Leandro Sasser, M.DStillwater, OK · No drug or device payments recorded (2025) ·
(405) 372-1480 Dr. Matthew Arnold, DOStillwater, OK · No drug or device payments recorded (2025) ·
(405) 784-5842 Dr. Michael Strange, M.D.Stillwater, OK · No drug or device payments recorded (2025) ·
(405) 744-7016 Dr. Michele Macdonnell, M.D.Stillwater, OK · No drug or device payments recorded (2025) ·
(405) 743-7300 Dr. Sam Earnest, M.D.Stillwater, OK · No drug or device payments recorded (2025) ·
(405) 743-7300 Dr. Sidney Williams, M.D.Stillwater, OK · $19 in drug and device payments (2025) ·
(405) 377-1121 Dr. Steven Cummings, M.D.Stillwater, OK · $160 in drug and device payments (2025) ·
(405) 742-5300 Dr. Terry Brown, M.D.Stillwater, OK · $91 in drug and device payments (2025) ·
(405) 743-7300 Dr. Whitney Frick, MDStillwater, OK · $71 in drug and device payments (2025) ·
(405) 784-5842 Dr. Woody Jenkins, M.D.Stillwater, OK · $245 in drug and device payments (2025) · Telehealth ·
(405) 743-7300 Conditions Internal Medicine providers in Stillwater, Oklahoma commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Stillwater, Oklahoma?There are 25 Internal Medicine providers with active NPI records practicing in Stillwater, according to federal NPPES data refreshed monthly.
How many Internal Medicine providers in Stillwater received drug or device company payments?13 of 25 (52%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Internal Medicine providers in Stillwater treat?Internal Medicine providers in Stillwater commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
All specialties in Stillwater Internal Medicine across Oklahoma