NPPES file of Aug 9, 2026

Doctors and health care providers in O Fallon, MO

1,225 individual NPPES records list a practice address in O Fallon, 16th of 317 Missouri cities. The largest group is physical therapist: 131, 11% of the city's records, against 4% across Missouri. Page 10 of 25.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in O Fallon

  1. Physical Therapist131
  2. Speech-Language Pathologist119
  3. Pharmacist84
  4. Professional Counselor81
  5. Chiropractor74
  6. Family Nurse Practitioner44
  7. Clinical Social Worker40
  8. Family Medicine Physician37

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

O Fallon in Missouri

  • Rank in Missouri16th of 317 cities by records
  • Share of the state1.1% of Missouri's records
  • Specialties present25 or more taxonomy codes
  • Top three groups27.3% of all records
  • Physical Therapist rank3rd of the 10 Missouri cities with the most

Compared with Missouri as a whole, O Fallon has 6.3× the state's share of orthodontics and dentofacial orthopedics dentistry records and 0.59× its share of internal medicine physician records.

Providers in O Fallon, alphabetically

  1. Thomas Harris, PLPCProfessional Counselor1801314331
  2. Craig Hartman, MHS, CCC-SLPSpeech-Language Pathologist1255684205
  3. Kimberly HartmanPharmacist1487931655
  4. Nathan Hartman, D.D.S.General Practice Dentistry1417197328
  5. Nicole Hartrum, SLPSpeech-Language Pathologist1013349364
  6. Fatima HasnainPharmacist1366928327
  7. Olivia Hasselfeld, PAPhysician Assistant1194334094
  8. Misty Hause, LPCProfessional Counselor1982729844
  9. Emily Hawkins, PHARMDPharmacist1063175123
  10. Lakendria Hawkins, D.C.Chiropractor1326410036
  11. Jenny HawthorneFamily Nurse Practitioner1376055004
  12. Connie Hayes, DCChiropractor1649588898
  13. Hannah Hedrick, OTR/LOccupational Therapist1184483851
  14. Zachary Hefner, DCChiropractor1326512591
  15. Joseph Hegyi, O.D.Optometrist1649263856
  16. Amanda Heidemann, MDFamily Medicine Physician1043329105
  17. Nathan Heimgartner, D.C.Chiropractor1447310917
  18. Kelsey Heisserer, MA, CF-SLPSpeech-Language Pathologist1134603954
  19. Anna Heithaus, M.H.S., CF-SLPSpeech-Language Pathologist1699220350
  20. Cheryl Held, D.D.S., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1760872360
  21. Todd HelmMental Health Counselor1255287702
  22. Michael Hemmersmeier, D.O.Family Medicine Physician1366404832
  23. Benjamin Hendrix, D.C.Chiropractor1417361262
  24. Jane Henke, L.P.C.Professional Counselor1265720973
  25. Jennifer Hershey, D.M.D.General Practice Dentistry1750453429
  26. Linda Herzberg, MSW, LCSWClinical Social Worker1811961329
  27. Whitney Hewitt, D.D.S., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1194275792
  28. Stephen Hiatt, D.D.S.Oral and Maxillofacial Surgery (Dentist)1942316617
  29. Susan Hileman, SLPSpeech-Language Pathologist1710298310
  30. Tracy Hilgert, RN,BSN,RNFARegistered Nurse First Assistant1124214184
  31. Hannah Hilke, MSSpeech-Language Pathologist1336972017
  32. Carlee Hill, DPTPhysical Therapist1043702376
  33. Laura Hill, ANPAdult Health Nurse Practitioner1194923151
  34. Phyllis Hill, MSW, LCSWClinical Social Worker1851445787
  35. Rebecca Hill, MS, RD, LDRegistered Dietitian1922959261
  36. Shalonda HindsmanHome Health Aide1740037464
  37. Jennifer Hinton, MDPediatrics Physician1881655454
  38. Laura Hoagland, PTPhysical Therapist1336459494
  39. Nancy Hodel, PTPhysical Therapist1417125683
  40. Kevin Hodges, RPHPharmacist1487930061
  41. Brittany HodgmanStudent in an Organized Health Care Education/Training Program1639777816
  42. Margaret Hoette, MOT OTR LOccupational Therapist1265761456
  43. Jennifer Hoff, PHARM DPharmacist1306441373
  44. Jennifer Hoffmann, MA, PLPCMental Health Counselor1568346740
  45. Leonard Hoffmann, M.D.Family Medicine Physician1174585665
  46. Nolan HolcombePhysical Therapist1043922404
  47. William Hollabaugh, MDPediatric Sports Medicine Physician1659868040
  48. Samantha Holland, ODOptometrist1992290886
  49. Robert Holloway, MDInterventional Pain Medicine Physician1316025554
  50. Jade Holman, FNPFamily Nurse Practitioner1558750364

The largest Missouri cities

  1. Saint Louis27,605
  2. Kansas City13,759
  3. Springfield6,403
  4. Columbia6,004
  5. Joplin2,443

All of Missouri →

How to read this directory

O Fallon, Missouri appears in the CMS National Plan and Provider Enumeration System with 1,225 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in O Fallon - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a O Fallon practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in O Fallon is weighted toward Physical Therapist (131 clinicians, followed by Speech-Language Pathologist with 119 and Pharmacist with 84). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Missouri's population, O Fallon reports roughly 19.8 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of Missouri's most common specialties, Behavior Technician is the most prominent one with no provider currently listing a O Fallon practice address, a coverage gap O Fallon patients typically fill by traveling to a larger nearby hub.

For O Fallon patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in O Fallon, MO?

There are 1,225 registered healthcare providers in O Fallon, MO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in O Fallon?

The most common specialties in O Fallon are Physical Therapist, Speech-Language Pathologist, Pharmacist, Professional Counselor, Chiropractor. Physical Therapist has the most providers with 131.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.