Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Healthcare providers in O Fallon, MO

1,610 active providers in O Fallon, Missouri — 1,216 individual practitioners and 394 organizations.

By provider type

By specialty in O Fallon

All providers in O Fallon — page 2

Nearby cities in Missouri