NPPES file of Aug 9, 2026

Doctors and health care providers in Peoria, IL

4,621 individual NPPES records list a practice address in Peoria, 4th of 541 Illinois cities. The largest group is students in training: 362, 8% of the city's records, against 3% across Illinois. Page 62 of 93.

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

The 8 largest groups in Peoria

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

Peoria in Illinois

  • Rank in Illinois4th of 541 cities by records
  • Share of the state1.9% of Illinois's records
  • Specialties present25 or more taxonomy codes
  • Top three groups17.7% of all records
  • Students in training rank2nd of the 10 Illinois cities with the most

Compared with Illinois as a whole, Peoria has 2.9× the state's share of student in an organized health care education/training program records and 0.49× its share of mental health counselor records.

Providers in Peoria, alphabetically

  1. Leia Ogburn, L.C.S.W.Clinical Social Worker1558370700
  2. Oladoyin Ogunbayo JolaoyeStudent in an Organized Health Care Education/Training Program1205577582
  3. Marcus Ohnemus, A.T.C.Athletic Trainer1215990189
  4. Oluchukwu Okonkwo, MDStudent in an Organized Health Care Education/Training Program1487269478
  5. Linda Okra-BoatengEmergency Medicine Physician1790063139
  6. Aderonke Olaoye, MDStudent in an Organized Health Care Education/Training Program1164211330
  7. Mutiat OlayiwolaDentist1114811544
  8. Nathaniel Oldenburg, LCPCProfessional Counselor1790431880
  9. Kayla Olesky, D.O.Emergency Medicine Physician1548794753
  10. Christy OliphantPediatrics Physician1184836561
  11. Bradley Oliver, M.D.Pediatrics Physician1598170730
  12. Roxie Oliver-Payne, MDFamily Medicine Physician1376864959
  13. Nancy Olivero, APNAcute Care Nurse Practitioner1376978601
  14. Haley OlsenFamily Medicine Physician1861180382
  15. Michael Olsen, M.D.Emergency Medicine Physician1144423526
  16. Ashley Olson, M.S., CCC-SLPSpeech-Language Pathologist1306240213
  17. Bret Olson, MDStudent in an Organized Health Care Education/Training Program1093509002
  18. Jessica OlsonPharmacist1417557414
  19. Richard Olson, D.C.Chiropractor1952436180
  20. Wendy Olson Padilla, M.D.Urology Physician1871752501
  21. Tamara Olt, M.D.Gynecology Physician1104870708
  22. Erin OmalleyCertified Registered Nurse Anesthetist1427915487
  23. Samson OmowumiPsychiatric/Mental Health Nurse Practitioner1457181877
  24. Angie OnionCritical Care Neonatal Nurse Practitioner1447586052
  25. Karla OntiverosBehavior Technician1598611725
  26. Sherin OommenPharmacist1306464839
  27. Chibuzor Opara, MDNeonatal-Perinatal Medicine Physician1346680766
  28. Jonathan Opperman, PTPhysical Therapist1154831725
  29. Stephen Orlevitch, M.D.Sports Medicine (Orthopaedic Surgery) Physician1841290913
  30. Andrew Ortega, M.D.Emergency Medicine Physician1467808402
  31. Alyssa Orton, M.S., CCC-SLPSpeech-Language Pathologist1184064743
  32. Stacy Orwig, MDFamily Medicine Physician1982826384
  33. Brandi Osborn, SPEECH THERAPISTSpeech-Language Pathologist1316066582
  34. Rodney Osborn, MDAnesthesiology Physician1114916335
  35. Adam Osborne, CRNACertified Registered Nurse Anesthetist1093068991
  36. Paul Osborne, SLPSpeech-Language Pathologist1447531405
  37. Kaitlyn OsmulskiOccupational Therapist1073318796
  38. Daniel Osterloo, LCPCMental Health Counselor1104253319
  39. Mallory Osterloo, LCPCCounselor1912885005
  40. Chukwunenye Osuji, M.D.Orthopaedic Trauma Physician1609041953
  41. Barbara Ott, O.D.Optometrist1851342588
  42. Larry Otte, D.M.D.Oral and Maxillofacial Surgery (Dentist)1194859355
  43. Louise Otte, S.T.Speech-Language Pathologist1215941745
  44. Erin Overcash, W.H.N.P.Women's Health Nurse Practitioner1659662070
  45. Larry Overcash, M.D.Obstetrics & Gynecology Physician1639136484
  46. Patti Overcash, FNPFamily Nurse Practitioner1780699124
  47. Erica Owchar, M.D.Student in an Organized Health Care Education/Training Program1942648548
  48. Aaron Owens, NPGerontology Nurse Practitioner1265070494
  49. Gina Owens-Spahn, LCPCProfessional Counselor1124358221
  50. Anne Padwojski, APNNurse Practitioner1225224835

The largest Illinois cities

  1. Chicago63,379
  2. Springfield4,997
  3. Naperville4,634
  4. Evanston4,013
  5. Rockford3,893

All of Illinois →

How to read this directory

Peoria, Illinois appears in the CMS National Plan and Provider Enumeration System with 4,621 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 Peoria - 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 Peoria 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 Peoria is weighted toward Student in an Organized Health Care Education/Training Program (362 clinicians, followed by Physical Therapist with 241 and Family Nurse Practitioner with 215). 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 Illinois's population, Peoria reports roughly 36.8 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 Illinois's most common specialties, Social Worker is the most prominent one with no provider currently listing a Peoria practice address, a coverage gap Peoria patients typically fill by traveling to a larger nearby hub.

For Peoria 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 Peoria, IL?

There are 4,621 registered healthcare providers in Peoria, IL, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Peoria?

The most common specialties in Peoria are Student in an Organized Health Care Education/Training Program, Physical Therapist, Family Nurse Practitioner, Nurse Practitioner, Internal Medicine Physician. Student in an Organized Health Care Education/Training Program has the most providers with 362.

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.