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Family Medicine in O Fallon, Missouri

Data updated monthly · Last refresh September 2026

35 Family Medicine providers practice in O Fallon, and 31% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Family Medicine providers in O Fallon

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. Alison Ball, D.O.
O Fallon, MO · $1,162 in drug and device payments (2025) · Telehealth · (636) 755-4400
Dr. Alissa Ballard, DO
O'fallon, MO · $324 in drug and device payments (2025) · Telehealth · (636) 240-5454
Dr. Alyssa Keller, M.D.
O Fallon, MO · $1,122 in drug and device payments (2025) · Telehealth · (636) 978-8600
Dr. Amanda Heidemann, MD
O Fallon, MO · No drug or device payments recorded (2025) · (636) 980-5300
Dr. Amritpal Lall
O Fallon, MO · $326 in drug and device payments (2025) · Telehealth · (636) 978-8600
Dr. Amy Grawey, M.D.
O Fallon, MO · No drug or device payments recorded (2025) · (636) 875-1140
Dr. Amy Mcclintock, M.D.
O Fallon, MO · No drug or device payments recorded (2025) · (573) 271-2927
Dr. Beth Zimmer, MD
O Fallon, MO · No drug or device payments recorded (2025) · (636) 561-5999
Dr. Caitlin Rogers, DO
O Fallon, MO · $11,288 in drug and device payments (2025) · (636) 344-2400
Dr. Chandra Wiewel, M.D.
O Fallon, MO · No drug or device payments recorded (2025) · (636) 379-4590
Dr. Daniel Weisel, MD
O Fallon, MO · No drug or device payments recorded (2025) · Telehealth · (636) 344-2400
Dr. Emily Hutchinson, DO
O Fallon, MO · No drug or device payments recorded (2025) · (636) 344-2400
Dr. Emma Gloe, MD
O Fallon, MO · No drug or device payments recorded (2025) · (636) 695-0535
Dr. George Stachecki, M.D.
O'fallon, MO · No drug or device payments recorded (2025) · (636) 240-5454
Dr. Heather Williamson, DO
O Fallon, MO · No drug or device payments recorded (2025) · (636) 379-4140
Dr. James Wendell, DO
Ofallon, MO · No drug or device payments recorded (2025) · (636) 240-5454
Dr. John O'brien, M.D.
O Fallon, MO · No drug or device payments recorded (2025) · (636) 240-5454
Dr. John O'connor, M.D.
O Fallon, MO · No drug or device payments recorded (2025) · (636) 294-5900
Dr. Jyoti Kulkarni, MD
O Fallon, MO · $245 in drug and device payments (2025) · (636) 240-5454
Dr. Leonard Hoffmann, M.D.
O Fallon, MO · No drug or device payments recorded (2025) · Telehealth · (636) 379-4590
Dr. Liza Stanton
O Fallon, MO · No drug or device payments recorded (2025) · (636) 240-5454
Dr. Marium Iqbal
O Fallon, MO · $139 in drug and device payments (2025) · (636) 202-6802
Dr. Maryam Naemi, D.O.
O Fallon, MO · No drug or device payments recorded (2025) · Telehealth · (636) 379-4590
Dr. Matthew Beckerdite, MD
Ofallon, MO · $52,856 in drug and device payments (2025) · (636) 240-5454
Dr. Matthew Schneider, DO
O Fallon, MO · $22 in drug and device payments (2025) · (636) 379-6363
Dr. Mckayla Dinwiddie, MD
O Fallon, MO · No drug or device payments recorded (2025) · (636) 695-0535
Dr. Michael Engel, MD
O'fallon, MO · No drug or device payments recorded (2025) · (636) 261-1600
Dr. Michael Hemmersmeier, D.O.
O Fallon, MO · No drug or device payments recorded (2025) · Telehealth · (636) 379-4590
Dr. Michael Williams, D.O.
O'fallon, MO · $36 in drug and device payments (2025) · (636) 333-9820
Dr. Nicholas Johnson, FNP
O Fallon, MO · No drug or device payments recorded (2025) · (636) 561-5999
Dr. Samantha Warden, MD
O Fallon, MO · No drug or device payments recorded (2025) · (636) 344-2400
Dr. Sarah Jackson, DO
O Fallon, MO · $37 in drug and device payments (2025) · Telehealth · (636) 614-3280
Dr. Sean Mcintosh
O Fallon, MO · No drug or device payments recorded (2025) · Telehealth · (636) 344-2400
Dr. Timothy Moore, D.O.
O Fallon, MO · $59 in drug and device payments (2025) · (636) 240-5454
Dr. Todd Johnson
O Fallon, MO · No drug or device payments recorded (2025) · (636) 685-7724
Dr. Van Hargraves, MD
O Fallon, MO · No drug or device payments recorded (2025) · (636) 695-2510
Dr. Wan In Koo, D.O.
O Fallon, MO · No drug or device payments recorded (2025) · Telehealth · (636) 379-8138

Conditions Family Medicine providers in O Fallon, Missouri commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Family Medicine providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Family Medicine providers are in O Fallon, Missouri?

There are 35 Family Medicine providers with active NPI records practicing in O Fallon, according to federal NPPES data refreshed monthly.

How many Family Medicine providers in O Fallon received drug or device company payments?

11 of 35 (31%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Family Medicine providers in O Fallon treat?

Family Medicine providers in O Fallon commonly treat annual physicals, high blood pressure, type 2 diabetes, preventive care, minor injuries 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 O Fallon Family 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.