NPPES file of Aug 9, 2026

Doctors and health care providers in Dayton, OH

12,431 individual NPPES records list a practice address in Dayton, 5th of 711 Ohio cities. The largest group is case manager/care coordinator: 1,218, 10% of the city's records, against 11% across Ohio. Page 165 of 249.

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

Dayton in Ohio

  • Rank in Ohio5th of 711 cities by records
  • Share of the state3.8% of Ohio's records
  • Specialties present25 or more taxonomy codes
  • Top three groups21.6% of all records
  • Case Manager/Care Coordinator rank6th of the 10 Ohio cities with the most

Compared with Ohio as a whole, Dayton has 1.9× the state's share of addiction (substance use disorder) counselor records and 0.50× its share of professional counselor records.

Providers in Dayton, alphabetically

  1. Krystyna Osinski-King, LCSW, LISWClinical Social Worker1114167251
  2. Sema OsmanStudent in an Organized Health Care Education/Training Program1114667599
  3. Brian Ostendorf, PAPhysician Assistant1710605142
  4. Olutoye Osunbunmi, MDNeonatal-Perinatal Medicine Physician1871760652
  5. Kristopher Oswalt, MDSurgery Physician1205954302
  6. Avonte OteyMental Health Counselor1952271074
  7. Julie Ott, D.OEmergency Medicine Physician1821219254
  8. Lisa Otto, LPCCSchool Counselor1295150860
  9. Joshua OtusafoNurse's Aide1922366855
  10. Julie Ousley, LPNLicensed Practical Nurse1104051556
  11. Keneshia OutlawCase Manager/Care Coordinator1851128649
  12. Micah Overholts, CDCAAddiction (Substance Use Disorder) Counselor1952261455
  13. Trey OverlaCertified Registered Nurse Anesthetist1073264602
  14. Emma OvermanAcute Care Nurse Practitioner1104556091
  15. Irina Overman, MDHospitalist Physician1760637540
  16. Teana OverstreetNurse's Aide1356166979
  17. Pinchas Ovide, MDPediatric Emergency Medicine (Emergency Medicine) Physician1114089752
  18. Jeffrey OwenMental Health Counselor1023252442
  19. Chiarina Owens, PHDPsychologist1134219363
  20. Erica Owens, STNANurse's Aide1053195974
  21. Kameron Owens, LPNLicensed Practical Nurse1235755448
  22. Leticia OwensBehavior Technician1205313970
  23. Madelynn OwensPhysician Assistant1750089454
  24. Mary OwensHomemaker1427804327
  25. Roger Owens, QMHS HSBehavior Technician1225756075
  26. Rosie OwensRegistered Nurse1265009823
  27. Sylvia Owens, CDCAAddiction (Substance Use Disorder) Counselor1518649573
  28. Leah Owens-Roe, APRN, CPNP-PCPediatric Nurse Practitioner1568869451
  29. Udabraye OwhosoBehavior Technician1770193658
  30. Danielle OwsleyHomemaker1679375174
  31. Pamela Owsley, R.N.Registered Nurse1740414051
  32. Katelyn Oxender, SLPSpeech-Language Pathologist1720331010
  33. Traci OxleyPersonal Care Attendant1215775150
  34. Mark Oxman, DONephrology Physician1417921958
  35. Remi Oyebanjo, LPNLicensed Practical Nurse1982926481
  36. Folashade OyekunleAdult Health Nurse Practitioner1780827618
  37. Amita Oza, MDInternal Medicine Physician1285634865
  38. Ratnam Oza, MDInternal Medicine Physician1003816687
  39. Ernest Ozonwankwo, CNAHome Health Aide1467299784
  40. Chindanu OzuahCase Manager/Care Coordinator1629694955
  41. Ugochukwu Ozumba, MDHospitalist Physician1699033571
  42. Audrey Pace, LSWSocial Worker1295970283
  43. James Pacenta, MDInterventional Cardiology Physician1558360016
  44. Cassie Pacer, PA-CPhysician Assistant1669987210
  45. Anita Pacheco, SLPSpeech-Language Pathologist1366737017
  46. Trisha Pachiano, DOObstetrics Physician1386621027
  47. Roger Pacholka, M.D.Emergency Medicine Physician1609967009
  48. Ellen Pacia, M.D.Specialist1801880851
  49. James PacificoAddiction (Substance Use Disorder) Counselor1992381214
  50. Kathy Pacifico, RNRegistered Nurse1891032397

The largest Ohio cities

  1. Columbus36,491
  2. Cincinnati31,362
  3. Cleveland30,748
  4. Toledo13,583
  5. Akron10,950

All of Ohio →

How to read this directory

Dayton, Ohio appears in the CMS National Plan and Provider Enumeration System with 12,431 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 Dayton - 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 Dayton 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 Dayton is weighted toward Case Manager/Care Coordinator (1,218 clinicians, followed by Addiction (Substance Use Disorder) Counselor with 815 and Student in an Organized Health Care Education/Training Program with 652). 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 Ohio's population, Dayton reports roughly 105.5 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.

For Dayton 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 Dayton, OH?

There are 12,431 registered healthcare providers in Dayton, OH, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Dayton?

The most common specialties in Dayton are Case Manager/Care Coordinator, Addiction (Substance Use Disorder) Counselor, Student in an Organized Health Care Education/Training Program, Licensed Practical Nurse, Behavior Technician. Case Manager/Care Coordinator has the most providers with 1,218.

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.