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 364 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. Olayiwola Olagbegi, M.D.Gastroenterology Physician1912011255
  2. David Olander, M.D.Pediatrics Physician1902123474
  3. Audrey OldaniBehavior Technician1598369142
  4. Julie OldaniOccupational Therapist1689707945
  5. Timothy Oldani, D.P.M.Foot & Ankle Surgery Podiatrist1225143480
  6. John Oldham, M.D.Emergency Medicine Physician1659376390
  7. Ellen OldsSpeech-Language Pathologist1659678373
  8. Catherine OlearyStudent in an Organized Health Care Education/Training Program1093574394
  9. Karen Olejniczak, PLPCProfessional Counselor1669345682
  10. Dawn Olenjack, DCChiropractor1316946155
  11. Todd OlesonPhysical Therapy Assistant1780448944
  12. Onyinyechukwu Oligbo, MDStudent in an Organized Health Care Education/Training Program1598603680
  13. Jittarat Olivares, PHARM.D.Pharmacist1235470725
  14. Cristina Olivas Chacon, M.D.Diagnostic Radiology Physician1477903672
  15. Hallie Olive, B.A.Social Worker1144469446
  16. Brian Oliveira, DDSGeneral Practice Dentistry1790136083
  17. Gisele Oliveira, M.D. M.SC. PH.D.Neurology Physician1780990739
  18. Marcos Vinicius Oliveira Marques, MDStudent in an Organized Health Care Education/Training Program1548020480
  19. Thiago Oliveira MendesBehavior Technician1225908296
  20. Carol Oliver, MBA, MA, LPCCounselor1598277766
  21. Ella OliverBehavior Technician1386337368
  22. Emily Oliver, PHARMDPharmacist1730986365
  23. Linda Oliver, MA,CCC,SLPSpeech-Language Pathologist1235320201
  24. Rena OliverCase Manager/Care Coordinator1699425033
  25. Stephanie OliverSocial Worker1376000810
  26. Theresa Oliver, ODOptometrist1427588185
  27. Jose Oliver SegarraGeneral Practice Dentistry1013758994
  28. Lindsay Olivera, FNP, APRNFamily Nurse Practitioner1679018527
  29. Jan Olivier, DMDGeneral Practice Dentistry1326112749
  30. Glenda OlivioPhysical Therapist1487899290
  31. Paul Olivo, M.D.Internal Medicine Physician1043746027
  32. Emily Olivos, MSW, LCSWClinical Social Worker1255957387
  33. Robert Olk, MDOphthalmology Physician1265429245
  34. Henry Ollinger, M.D.Plastic Surgery Physician1487735247
  35. Matthew Olocco, MDEmergency Medicine Physician1083399034
  36. Stephanie OlomukoroCertified Registered Nurse Anesthetist1073434163
  37. Kathryn OlreeSpeech-Language Pathologist1235396565
  38. Jerry OlsenClinical Social Worker1821776253
  39. Mackenzie Olsen, MDStudent in an Organized Health Care Education/Training Program1982406039
  40. Thomas Olsen, M.D.Internal Medicine Physician1235142274
  41. Autumn OlsonBehavior Analyst1508510678
  42. Elizabeth Olson, MS, CCC-SLPSpeech-Language Pathologist1881024099
  43. Emily Olson, D.O.Student in an Organized Health Care Education/Training Program1912347386
  44. Jeffrey Olson, MDOrthopaedic Surgery Physician1356871594
  45. John Olson, MDSurgical Oncology Physician1649370750
  46. Kenneth Olson, P.A. - CMedical Physician Assistant1649232877
  47. Mary Olson, PHDClinical Neuropsychologist1174267660
  48. Nathanael OlsonOrthopaedic Hand Surgery Physician1033564760
  49. Nicole Olson, PTAPhysical Therapy Assistant1689927527
  50. Patrick Olson, MDInfectious Disease Physician1801380951

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.