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 365 of 553.
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
- Stephen Olson, M.D.Anatomic Pathology & Clinical Pathology Physician1760663942
- Tracy Olson, PMHNPPsychiatric/Mental Health Nurse Practitioner1114638566
- Michael Olufawo, MDDiagnostic Radiology Physician1033962360
- Franklin Olumba, MDSurgery Physician1144880170
- James OmalleyMental Health Counselor1174147615
- Hasaan OmarStudent in an Organized Health Care Education/Training Program1487383550
- Salma Omar, DOStudent in an Organized Health Care Education/Training Program1881453140
- Michael Ombrello, M.D.Student in an Organized Health Care Education/Training Program1235330515
- Alvan Omeni, M.D.Sleep Medicine (Internal Medicine) Physician1285965855
- Fatima Omer, M.B.B.S.Student in an Organized Health Care Education/Training Program1417758335
- Lejla OmerovicMental Health Counselor1326983172
- Kenan Omurtag, MDReproductive Endocrinology Physician1477738136
- Marissa Omurtag, M.D.Anesthesiology Physician1093992679
- Jude Onaghise, MDInternal Medicine Physician1124376942
- Lindsey Onate, LD, RDNRegistered Dietitian1750988499
- Megan Onder, FNP-CFamily Nurse Practitioner1821540311
- Robert Onder, M.D.Allergy Physician1164533295
- Maureen Oneill, PACMedical Physician Assistant1962518621
- Stefanie Oneill, LPCProfessional Counselor1558797431
- Danier Ong, MDEmergency Medicine Physician1255073912
- Peter Ong, DMDDentist1386401750
- Ellen OnicaAudiologist1407591225
- Moyosore Onifade, M.D.Internal Medicine Physician1669586954
- Ellie Onstott, MDStudent in an Organized Health Care Education/Training Program1508755984
- Odinakachukwu Onuigbo, MDStudent in an Organized Health Care Education/Training Program1962338178
- Kalu Onuma, M.D.,Psychiatry Physician1447415518
- Bibian OnyeachoNurse's Aide1104220045
- Otuomasirichi Onyema, DNP, MPH, FNP-BCFamily Nurse Practitioner1861048225
- Obinna Onyeukwu, MDEmergency Medicine Physician1255081006
- Irene Opai Tetteh, MDAnesthesiology Physician1598781734
- Peter Oppelt, MDMedical Oncology Physician1639332968
- Beth Oppenheim, OTRPediatric Occupational Therapist1952455651
- Jerilyn Oppenheimer, MSW,LCSWCase Manager/Care Coordinator1336627694
- Allison Optican, M.D.Psychiatry Physician1629429865
- Kennedy OrbanBehavior Technician1518688290
- Jennifer Orbe, DOPediatric Emergency Medicine (Pediatrics) Physician1629498555
- Lauren Orbik, OTROccupational Therapist1275378580
- Megan Orchard, PAMedical Physician Assistant1457658254
- Rebecca Oree, AAAnesthesiologist Assistant1619727336
- Cassandra OrellanaNeonatal-Perinatal Medicine Physician1841466349
- Erin Orf, MDHospitalist Physician1073995593
- Nikhil Organti, MDCritical Care Medicine (Internal Medicine) Physician1891925558
- Irene Oriaifo, MDPediatric Emergency Medicine (Pediatrics) Physician1083966790
- Michael Orihuela, LCSWClinical Social Worker1821398694
- Kehinde OrimayeBehavior Technician1538031307
- Elmire OriolBehavior Technician1912831942
- Angela OristeClinical Social Worker1053199018
- Angela Orlando, CPNPPediatric Nurse Practitioner1265725030
- Daniel Orlet, RNPsychiatric/Mental Health Registered Nurse1639346331
- Katrina Orlet, MSW, LCSWClinical Social Worker1679829980
The largest Missouri cities
- Kansas City13,759
- Springfield6,403
- Columbia6,004
- Joplin2,443
- Chesterfield2,132
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.