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 13 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. Jordan KlinckhardtSpeech-Language Pathologist1154790939
  2. Laura Klossner, RD, LDRegistered Dietitian1477921278
  3. Devon KnappOrthopedic Physical Therapist1871143552
  4. Jill Kneemiller, LPCProfessional Counselor1720561533
  5. Kristin Knoop, CF-SLPSpeech-Language Pathologist1316494180
  6. Bernadette KoehlerPhysical Therapy Assistant1124654629
  7. Nicole KoellingHealth & Wellness Coach1205755642
  8. Sierra Koester, LPCMental Health Counselor1669213633
  9. Meghann KonczalSpeech-Language Pathologist1225411184
  10. John Konopik, O.D.Optometrist1760450696
  11. Wan In Koo, D.O.Family Medicine Physician1871554865
  12. Karen Korte, APRN FNP BCFamily Nurse Practitioner1871236380
  13. Neha Kotkar, PTPhysical Therapist1134865058
  14. Anja KovacevicPharmacist1750665964
  15. Rachel Kowalik, PLPCMental Health Counselor1083003776
  16. Kayla Kremer, PNPPediatric Nurse Practitioner1891005427
  17. Lindsey Krieg, DPTPhysical Therapist1528314002
  18. Tatyana KrinitskiyOccupational Therapy Assistant1114628997
  19. Shannon Kroh, APRN, WHNP-BC, IBCLCWomen's Health Nurse Practitioner1780421222
  20. Tangala KrousBehavior Analyst1083973234
  21. Pamela Kuda, APN-BCAdult Health Nurse Practitioner1295775989
  22. Tyler KuhlmannChiropractor1518761881
  23. Jyoti Kulkarni, MDFamily Medicine Physician1649281668
  24. Hattie KurkSpeech-Language Pathologist1760367346
  25. Jacqueline Ladd, O.D.Optometrist1053751537
  26. Elizabeth Ladue, M.A.Speech-Language Pathologist1134672561
  27. Amritpal LallFamily Medicine Physician1730996844
  28. Kimberly Lamzik, PTPhysical Therapist1649970179
  29. Bradley Lance, DDSDentist1356900872
  30. Yelena Landa, PHARM DPharmacist1992088074
  31. Randall Landman, PHARMACISTPharmacist1396060372
  32. David Lane, COTA/L,MHAOccupational Therapy Assistant1295927176
  33. Jeffrey Lant, O.D.Optometrist1710241583
  34. Chakrapol Lattanand, MDAnesthesiology Physician1033198551
  35. Osvaldo Laurido Soto, MDNeurology Physician1942615489
  36. Maureen LawrencePhysical Therapist1508176686
  37. Rebecca Lazalier, LPCProfessional Counselor1477876944
  38. Tyler Leavitt, DDSDentist1902307911
  39. Anne Lee, LMTMechanotherapist1679720874
  40. Jason Lee, DPTPhysical Therapist1194516211
  41. Courtney Lehmen, D.C.Chiropractor1871726091
  42. Grace Lehouillier, PTAPhysical Therapy Assistant1235602251
  43. Caryn Leljedal, OTR/LOccupational Therapist1598196297
  44. Megan LenhardSpeech-Language Pathologist1154887578
  45. Jeffrey Lenius, D.D.S, M.S.D.Orthodontics and Dentofacial Orthopedics Dentistry1134547474
  46. Benjamin Leuthauser, DPTPhysical Therapist1972382992
  47. Ryan Levins, PHARMDPharmacist1861941791
  48. Nat Levy, MDCritical Care Medicine (Internal Medicine) Physician1790777225
  49. Veda Lewis-Simmons, DPM MHA LLCPodiatrist1710053566
  50. Sneha Lin, O.D.Optometrist1215138805

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.