HealthcareDiscovery.AI / Doctors / Missouri / O Fallon

Doctors in O Fallon, Missouri

Data updated monthly · Last refresh September 2026

254 licensed providers practice in O Fallon across 34 specialties, and 30% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

254providers

34specialties

30%with industry payments

Specialties in O Fallon

Chiropractor in O Fallon (75) · 4% received drug or device payments
Family Medicine in O Fallon (35) · 31% received drug or device payments
Obstetrics & Gynecology in O Fallon (20)
Pediatrics in O Fallon (20)
Registered Dietitian in O Fallon (17)
Internal Medicine in O Fallon (17)
Anesthesiology in O Fallon (15)
Emergency Medicine in O Fallon (9)
Orthopaedic Surgery in O Fallon (6)
Gastroenterology in O Fallon (5)
Neurology in O Fallon (4)
Urology in O Fallon (3)
Dermatology in O Fallon (3)
Phlebology in O Fallon (2)
Physical Medicine & Rehabilitation in O Fallon (2)
Pain Medicine in O Fallon (2)
Sports Medicine (Orthopaedic Surgery) in O Fallon (2)
Acupuncturist in O Fallon (1)
MOHS-Micrographic Surgery in O Fallon (1)
Otolaryngology in O Fallon (1)
Nutrition Chiropractor in O Fallon (1)
Interventional Pain Medicine in O Fallon (1)
Cardiovascular Disease in O Fallon (1)
Infectious Disease in O Fallon (1)
Psychiatry in O Fallon (1)
Surgery in O Fallon (1)
Pediatric Sports Medicine in O Fallon (1)
Pediatric Allergy/Immunology in O Fallon (1)
Critical Care Medicine (Internal Medicine) in O Fallon (1)
Sports Physician Chiropractor in O Fallon (1)
General Practice in O Fallon (1)
Behavioral Neurology & Neuropsychiatry in O Fallon (1)
Allergy & Immunology in O Fallon (1)
Hospitalist in O Fallon (1)

Common questions

How many doctors practice in O Fallon, Missouri?

254 licensed providers with active NPI records list a practice address in O Fallon, according to federal NPPES data refreshed monthly.

How many doctors in O Fallon received drug or device company payments?

77 of 254 providers in O Fallon (30%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

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.

Other cities in Missouri

All Missouri specialties Ask Zach for help choosing

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.