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 366 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. Martha Orlet, MSN, PMHNPPsychiatric/Mental Health Nurse Practitioner1902505589
  2. Jane Orling, MDPediatric Emergency Medicine (Pediatrics) Physician1245340512
  3. Ralph Orlovick, PH.D.Psychologist1346386331
  4. Mykael Ornbaun, MSWClinical Social Worker1073910667
  5. Jacob OrnburnPhysical Therapy Assistant1760191621
  6. Michael Ornburn, D.OAnesthesiology Physician1881958429
  7. Lisa Ornellas, R.PH.Pharmacist1962454389
  8. Ann Ornitz, N.P.Family Nurse Practitioner1932641438
  9. Bradley Ornstein, MDPediatric Rheumatology Physician1679759617
  10. Hannah OrourkePhysical Therapist1922654763
  11. Guadalupe Orozco, HYGIENISTDental Hygienist1447379151
  12. Adam Orr, MDDiagnostic Radiology Physician1033630090
  13. Dawn Orr, PHARM D.Pharmacist1538451125
  14. Elizabeth Orr, LCPCProfessional Counselor1588957203
  15. Jamilah OrrCase Manager/Care Coordinator1134875008
  16. Jonah Orr, MDStudent in an Organized Health Care Education/Training Program1790301521
  17. Molly OrrNurse Practitioner1164132700
  18. Peyton OrrAthletic Trainer1467371799
  19. William Orr, MDPediatric Cardiology Physician1699115006
  20. Rachel Orscheln, MDPediatric Infectious Diseases Physician1396763017
  21. Crista Ortbals, PSY.D.Clinical Psychologist1851669261
  22. Dawn Ortega, MED, MCProfessional Counselor1205251378
  23. Madison OrtegaBehavior Technician1508357278
  24. Christian Ortiz, AA-SAnesthesiologist Assistant1760004543
  25. Gina OrtizSocial Worker1821599010
  26. Vivian Ortiz, MDGastroenterology Physician1083060701
  27. Irma Ortiz-Arroyo, MDPediatrics Physician1285627356
  28. Madeleine Ortman, RN, PCNS, CPNPPediatric Nurse Practitioner1023230083
  29. Shannon Ortman, PTPhysical Therapist1033583091
  30. Amanda Ortmann, AUDAudiologist1275633422
  31. Kadie Orton, ANPNurse Practitioner1457727695
  32. Charles Ortwerth, CRNACertified Registered Nurse Anesthetist1659329613
  33. Megan Ortwerth, MOTR/LOccupational Therapist1366872186
  34. Anthony Orvedahl, MDPediatric Infectious Diseases Physician1710241880
  35. Daniel Ory, MDCardiovascular Disease Physician1164448478
  36. Zygmunt Orzechowski, M.D.Pulmonary Disease Physician1730163924
  37. Amanda OrzelBehavior Technician1063156370
  38. Lilian Osa-EdohSocial Worker1285951640
  39. Mark Osborn, D.D.S.General Practice Dentistry1902951551
  40. Meredith Osborn, NCC, CSAPPMental Health Counselor1669595229
  41. Tiffany Osborn, MDSurgery Physician1245438050
  42. Abigail Osborne, MS, CCC-SLPSpeech-Language Pathologist1225867583
  43. Linda Osborne, R.D., L.D.Registered Dietitian1083753198
  44. Nicole Osborne, NNPNeonatal-Perinatal Medicine Physician1366277584
  45. Joshua Osbun, MDNeurological Surgery Physician1316139793
  46. Rebecca Oschwald, DPTPhysical Therapist1447133913
  47. Joseph Osdieck, D.M.DPediatric Dentistry1376791509
  48. Sarah OsdieckFamily Nurse Practitioner1316274905
  49. Grace Osei, CRNACertified Registered Nurse Anesthetist1982974093
  50. Osamuede Osemwota, MDDermatology Physician1275972432

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.