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Internal Medicine in St. Louis, Missouri

Data updated monthly · Last refresh September 2026

55 Internal Medicine providers practice in St. Louis, and 35% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Internal Medicine providers in St. Louis

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. Akriti Acharya, M.D.
St.louis, MO · No drug or device payments recorded (2025) · (314) 768-8778
Dr. Alan Jose, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 768-8778
Dr. Alexandra Zdonczyk, MD
St. Louis, MO · $16 in drug and device payments (2025) · (314) 362-1935
Dr. Alex Geyer, MD
St. Louis, MO · $25 in drug and device payments (2025) · (314) 747-3000
Dr. Anna Naumovich, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 481-7977
Dr. Badreddien Hammad, M.D.
St. Louis, MO · No drug or device payments recorded (2025) · (314) 768-8778
Dr. Baolin Fan, MD
St Louis, MO · $602 in drug and device payments (2025) · (314) 772-1441
Dr. Bhavana Choudhary, M.D.
St. Louis, MO · No drug or device payments recorded (2025) · Telehealth · (314) 251-6339
Dr. Binu Mathew, MD
St. Louis, MO · No drug or device payments recorded (2025) · (314) 251-6339
Dr. Chau L Chen, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 997-3430
Dr. David Horan, M.D
St Louis, MO · No drug or device payments recorded (2025) · (314) 503-6158
Dr. David Parks, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 652-0100
Dr. David Zhang, MD, PHD
St. Louis, MO · $57 in drug and device payments (2025) · (314) 747-3000
Dr. Delani Mann, MD
St Louis, MO · $52 in drug and device payments (2025) · (314) 361-7003
Dr. Faridah Salau, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 362-8065
Dr. Francis Contreras, M.D.
St. Louis, MO · No drug or device payments recorded (2025) · (314) 768-8778
Dr. Gary Ratkin, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 977-1250
Dr. Hinna Shahid, MD
St. Louis, MO · No drug or device payments recorded (2025) · (314) 647-9797
Dr. Irvianny Madera, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 362-9096
Dr. Jambunathan Mahadevan, MD
St Louis, MO · $325 in drug and device payments (2025) · (314) 865-6585
Dr. James Purtell, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 849-6850
Dr. Jennifer Delaney, MD
St Louis, MO · $161 in drug and device payments (2025) · (314) 993-1200
Dr. John Davis, MD PHD
St. Louis, MO · No drug or device payments recorded (2025) · (314) 747-3000
Dr. John Flick, D.O.
St Louis, MO · $39 in drug and device payments (2025) · Telehealth · (314) 569-6000
Dr. Joseph Flaherty, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 977-8462
Dr. Joseph Pierchorowicz, M.D.
St. Louis, MO · No drug or device payments recorded (2025) · (314) 768-8778
Dr. Joshua Newman, MD
St. Louis, MO · $20,000 in drug and device payments (2025) · (314) 362-5000
Dr. Karoliina Yang, MD
St. Louis, MO · No drug or device payments recorded (2025) · (318) 368-8539
Dr. Kavita Patwardhan, MD
St. Louis, MO · No drug or device payments recorded (2025) · (314) 368-6979
Dr. Kelly Gage, M.D.
St. Louis, MO · $19 in drug and device payments (2025) · Telehealth · (314) 698-2500
Dr. Kelsey Seger, DO
St. Louis, MO · No drug or device payments recorded (2025) · Telehealth · (314) 509-5305
Dr. Laila Hanna, MD
St Louis, MO · $112 in drug and device payments (2025) · (314) 367-5820
Dr. Lawrence Narkiewicz, M.D.
St. Louis, MO · No drug or device payments recorded (2025) · (314) 698-2500
Dr. Lekha Chirala, MS, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 362-8065
Dr. Leni Abraham, MD
St. Louis, MO · $565 in drug and device payments (2025) · (314) 268-7992
Dr. Masood Khan, M.D.
St Louis, MO · No drug or device payments recorded (2025) · (314) 768-8778
Dr. Maya Mahmoud, M.D.
St. Louis, MO · $481 in drug and device payments (2025) · (314) 977-2622
Dr. Micaela Mackay, MD
St. Louis, MO · $140 in drug and device payments (2025) · (314) 369-2511
Dr. Mohammad Qadir, MD
St. Louis, MO · No drug or device payments recorded (2025) · (314) 652-4100
Dr. Morris Joftus, M.D.
St. Louis, MO · No drug or device payments recorded (2025) · (314) 367-7848
Dr. Naga Neelima Nallapaneni, M.D
St Louis, MO · No drug or device payments recorded (2025) · (314) 898-1700
Dr. Nicholas Griffith, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 747-1080
Dr. Nicole Delsoin Pierre, MD MPH
St Louis, MO · No drug or device payments recorded (2025) · (314) 367-5820
Dr. Nillima Ghosh, DO
St. Louis, MO · No drug or device payments recorded (2025) · (314) 367-7848
Dr. Patrick Durbin, MD
St Louis, MO · No drug or device payments recorded (2025) · (314) 644-7000
Dr. Patrick Mccann, MD
St Louis, MO · $187 in drug and device payments (2025) · (314) 832-3000
Dr. Peter Bettonville, M.D.
St. Louis, MO · No drug or device payments recorded (2025) · (314) 698-2500
Dr. Rick Hummel, MD
St Louis, MO · $2,357 in drug and device payments (2025) · (314) 741-1400
Dr. Robert Fischer, M.D.
St. Louis, MO · No drug or device payments recorded (2025) · (314) 698-2500
Dr. Rosemary Quinn, MD
St. Louis, MO · No drug or device payments recorded (2025) · (314) 362-1935

Conditions Internal Medicine providers in St. Louis, Missouri 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.

Common questions

How many Internal Medicine providers are in St. Louis, Missouri?

There are 55 Internal Medicine providers with active NPI records practicing in St. Louis, according to federal NPPES data refreshed monthly.

How many Internal Medicine providers in St. Louis received drug or device company payments?

19 of 55 (35%) 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 St. Louis treat?

Internal Medicine providers in St. Louis 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 St. Louis Internal Medicine across Missouri

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.