NPPES file of Aug 9, 2026

Doctors and health care providers in Saint Louis, MO

27,605 individual NPPES records list a practice address in Saint Louis, 1st of 317 Missouri cities. The largest group is clinical social worker: 1,474, 5% of the city's records, against 5% across Missouri. Page 367 of 553.

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

The 8 largest groups in Saint Louis

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

Saint Louis in Missouri

  • Rank in Missouri1st of 317 cities by records
  • Share of the state24.8% of Missouri's records
  • Specialties present25 or more taxonomy codes
  • Top three groups14.1% of all records
  • Clinical Social Worker rank1st of the 10 Missouri cities with the most

Compared with Missouri as a whole, Saint Louis has 1.9× the state's share of diagnostic radiology physician records and 0.55× its share of family nurse practitioner records.

Providers in Saint Louis, alphabetically

  1. Russell Osguthorpe, MDPediatric Infectious Diseases Physician1285656322
  2. Kenneth Osia, DCChiropractor1922078039
  3. Daniel OslandPharmacist1821428137
  4. Jason Oslund, CRNACertified Registered Nurse Anesthetist1093010282
  5. Ali Osman, MDHospitalist Physician1992220438
  6. Kimberly Osmanagic, LPCMental Health Counselor1598354383
  7. Nizar Osmani, MDEmergency Medicine Physician1932789559
  8. Christine Osmon, M.D.Diagnostic Radiology Physician1568425585
  9. Shellie Osorio, LCSWClinical Social Worker1851714687
  10. Tamara Ostapowicz, M.D.Obstetrics & Gynecology Physician1497788459
  11. Andrew Oster, M.D.Pediatric Anesthesiology Physician1508200775
  12. Joan Osterloh, APNMedical-Surgical Clinical Nurse Specialist1053426809
  13. Jacob Osterman, DOAnesthesiology Physician1477180347
  14. Austin Ostermeier, MDHospitalist Physician1174919575
  15. Kathleen Osthoff, CRNACertified Registered Nurse Anesthetist1841282613
  16. Richard Ostlund, MDEndocrinology, Diabetes & Metabolism Physician1114945813
  17. Julia OstropolskyClinical Social Worker1871613059
  18. Nicole Ostrowski, L.C.S.W.Clinical Social Worker1407255904
  19. Ngozi Osuji, MDStudent in an Organized Health Care Education/Training Program1740910835
  20. Lorette Osun, CRNACertified Registered Nurse Anesthetist1164028171
  21. Igor Otahal, MDAnesthesiology Physician1598781809
  22. Ebunoluwa Otegbeye, MDSurgery Physician1720508666
  23. Zaineb Othman, FNPFamily Nurse Practitioner1487048674
  24. Stephanie Otis, M.D.Pediatric Orthopaedic Surgery Physician1841226487
  25. Alicia Ott, LPCProfessional Counselor1811492598
  26. Deborah Ott, MDAnesthesiology Physician1831178367
  27. Drake Ott, ATCAthletic Trainer1275937062
  28. Hayley Ott, FNPFamily Nurse Practitioner1346920006
  29. Kelly Ott, M.D.Obstetrics & Gynecology Physician1275734261
  30. Margaret Ott, PNPPediatric Nurse Practitioner1407508807
  31. Rachel Ott, FNP-BCFamily Nurse Practitioner1922517697
  32. Sylvia Ott, R.N.Registered Nurse1811228984
  33. Debra Otten, PTPhysical Therapist1811232176
  34. Olivia OttenCommunity Health Worker1437731627
  35. Kristen Ottenlips, MA CF-SLPSpeech-Language Pathologist1003331836
  36. Andrea Otto, M.D.Family Medicine Physician1851336325
  37. Jane Otto, M.A.M.S., D.M.D.General Practice Dentistry1386651685
  38. Thomas Otto, MDOrthopaedic Surgery Physician1417979113
  39. Megan Ottomeyer, D.ONeonatal-Perinatal Medicine Physician1649704784
  40. Robyn Otty, OTD, OTR/LOccupational Therapist1740554294
  41. Jiafu Ou, MDCardiovascular Disease Physician1093924003
  42. William Ou, MDDiagnostic Radiology Physician1609454388
  43. William Oubre, BSN, RN, CNOR, RNFARegistered Nurse First Assistant1245684869
  44. Alexis Ouellette, SLP-CFSpeech-Language Pathologist1992217905
  45. Thomas Ourth, M.S.W., L.C.S.W.Clinical Social Worker1275902496
  46. Kennadi OutlawRegistered Nurse1013879444
  47. Michael OuzenDentist1871505131
  48. Rachel Overberg, PAPhysician Assistant1407370059
  49. Justyna OverbeyProfessional Counselor1578619383
  50. Trdell OverbeyLicensed Practical Nurse1457756850

The largest Missouri cities

  1. Kansas City13,759
  2. Springfield6,403
  3. Columbia6,004
  4. Joplin2,443
  5. Chesterfield2,132

All of Missouri →

How to read this directory

Saint Louis, Missouri appears in the CMS National Plan and Provider Enumeration System with 27,605 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 Saint Louis - 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 Saint Louis 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 Saint Louis is weighted toward Clinical Social Worker (1,474 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,338 and Speech-Language Pathologist with 1,083). 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, Saint Louis reports roughly 445.5 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 Saint Louis practice address, a coverage gap Saint Louis patients typically fill by traveling to a larger nearby hub.

For Saint Louis 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 Saint Louis, MO?

There are 27,605 registered healthcare providers in Saint Louis, MO, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Saint Louis?

The most common specialties in Saint Louis are Clinical Social Worker, Student in an Organized Health Care Education/Training Program, Speech-Language Pathologist, Pharmacist, Professional Counselor. Clinical Social Worker has the most providers with 1,474.

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.