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 381 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. Stanley Peters, M.S.W.Clinical Social Worker1326052507
  2. Stephanie PetersPhysical Therapy Assistant1760833743
  3. Diane Petersen, M.D.Obstetrics & Gynecology Physician1790719342
  4. Lauren PetersenInternal Medicine Physician1386339125
  5. Mathew Petersen, ATCAthletic Trainer1326445198
  6. Max Petersen, MDEndocrinology, Diabetes & Metabolism Physician1184112344
  7. Rebecca Petersen, MDNeonatal-Perinatal Medicine Physician1205125952
  8. Rebecca Petersen, FNPNurse Practitioner1902349947
  9. Robert Petersen, MDPediatric Cardiology Physician1912296757
  10. William Petersen, PH.D.Counseling Psychologist1124109400
  11. Danielle Petersmith, CRNACertified Registered Nurse Anesthetist1174899199
  12. Alexandria Peterson, PAPhysician Assistant1497493431
  13. Andrew Peterson, MDStudent in an Organized Health Care Education/Training Program1285378562
  14. Annahita Peterson, MD, MSCIStudent in an Organized Health Care Education/Training Program1518652023
  15. Brian Peterson, MDVascular Surgery Physician1356359376
  16. Casey Peterson, O.D.Optometrist1033585161
  17. Chelsea Peterson, DPTPhysical Therapist1447058805
  18. Christine Peterson, MDDiagnostic Radiology Physician1912051848
  19. Christopher Peterson, DPTPhysical Therapist1063092161
  20. Collin PetersonAthletic Trainer1851825319
  21. Crystal PetersonLicensed Practical Nurse1073057352
  22. Diane Peterson, MSWInterpreter1518254770
  23. Elizabeth PetersonStudent in an Organized Health Care Education/Training Program1982417697
  24. Gary Peterson, MDVascular Surgery Physician1902900517
  25. Jordan Peterson, CRNACertified Registered Nurse Anesthetist1861767469
  26. Lance Peterson, MDPediatric Rheumatology Physician1528552510
  27. Laura PetersonSpeech-Language Pathologist1376926634
  28. Linda Peterson, MDCardiovascular Disease Physician1912923137
  29. Lindsay Peterson, MDMedical Oncology Physician1194900134
  30. Mary Peterson, LCSWClinical Social Worker1023263563
  31. Matthew Peterson, PAPhysician Assistant1285745711
  32. Melissa Peterson, LICSWClinical Social Worker1811211139
  33. Michael Peterson, MDInternal Medicine Physician1942760517
  34. Nathan Peterson, CRNACertified Registered Nurse Anesthetist1144513888
  35. Renuka Peterson, M.D.Pediatric Cardiology Physician1194823310
  36. Tayler Peterson, DOAnesthesiology Physician1538797550
  37. Tiffany Peterson, LCPCounselor1386378883
  38. Bradley Petkovich, M.D.Pulmonary Disease Physician1033485156
  39. Frank Petkovich, M.D.Orthopaedic Surgery Physician1609827070
  40. Peggy Petralia, D.O.Family Medicine Physician1972542603
  41. Michael PetranyNeurology Physician1215671433
  42. Kelly PetrashOccupational Therapist1699808964
  43. Richard Petrella, MDInternal Medicine Physician1437728144
  44. Theresa Petrenchik, OTR/LOccupational Therapist1992082259
  45. Nadiia Petrenko, LCSWClinical Social Worker1306513379
  46. Angela PetriPharmacist1285227983
  47. Margaret Petri Jokerst, LPC, LCPCProfessional Counselor1689933863
  48. Michelle Petrich, MDMaternal & Fetal Medicine Physician1447814702
  49. Jane Petrie, MSW, LCSWClinical Social Worker1780690057
  50. Alexis Petrilla, LBA, BCBABehavior Analyst1831879303

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.