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 164 of 249.
The 8 largest groups in Dayton
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
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
- Tabitha Oliver, PHARMDPharmacist1578112512
- Crystal Olmstead, PCC#3819ANDLSW#21302Social Worker1639563984
- Aarika OlsenClinical Neuropsychologist1871028258
- Cynthia Olsen, MDGeriatric Medicine (Family Medicine) Physician1184680910
- Kaitlyn OlsenSocial Worker1912521741
- Thomas Olsen, MDDermatopathology (Pathology) Physician1023005261
- Dettleff Olson, D.O.Family Medicine Physician1497868475
- Charlotte Olsten, NP-CNurse Practitioner1588225304
- Jennifer Omar, CDCAAddiction (Substance Use Disorder) Counselor1396570222
- Abiodun Omoloja, MDPediatric Nephrology Physician1811932767
- Julie OmondiBehavior Technician1114508173
- Rena Onady, LISW-SClinical Social Worker1316670763
- Laurel OnealCase Manager/Care Coordinator1427927284
- Lindsey Oneal, CDCAAddiction (Substance Use Disorder) Counselor1144035288
- Ivan Ongom, MDHospitalist Physician1659502433
- Tommy Onjukka, DDSDentist1245493048
- Brian Ontko, P.T.Physical Therapist1033320841
- Na'Sha Onuoha, APRN, CNP, PMHNPPsychiatric/Mental Health Nurse Practitioner1326710823
- Chidiebele Onwugbenu, PHARMDPharmacist1881211977
- Hyacinth OnyekaHome Health Aide1508636234
- Ashley OnyiaAddiction (Substance Use Disorder) Counselor1154963635
- Swe Zin Mar Winhtut Oo, M.D.Nephrology Physician1396136875
- Jane Oosthuizen, DOInternal Medicine Physician1598124646
- Bryan Opaskar, PT, DPTPhysical Therapist1134858699
- Daniel Opris, D.OInternal Medicine Physician1740547983
- Matthew Oram, MDEmergency Medicine Physician1891322285
- Nicole Orihood, QMHSBehavior Technician1487147468
- Oluremi Oriowo, RNRegistered Nurse1083906457
- Sheryll Orlett, P.T.11Physical Therapist1255541306
- Mercy Orock, PMHNPRegistered Nurse1518666320
- Sarah Orr, ATCAthletic Trainer1063966414
- Jasmine Ortiz, MA, SLPSpeech-Language Pathologist1992221691
- Luis Ortiz, ATCAthletic Trainer1790999589
- Margaret Ortiz, LCDCIIIAddiction (Substance Use Disorder) Counselor1861167405
- Marlene OrtizBehavior Technician1285495283
- Tyler Ortlieb, ATCAthletic Trainer1528344785
- Michael Ortman, DDSGeneral Practice Dentistry1538112669
- Emily Orton, CDCAAddiction (Substance Use Disorder) Counselor1487230272
- Kimberly Osborn, LSWSocial Worker1699061747
- Sydney OsbornCounselor1578391439
- Amanda Osborne, DPTPhysical Therapist1851073894
- Greg OsborneRegistered Nurse1598637472
- Jacqueline Osborne, LPNLicensed Practical Nurse1528293131
- Kim Osborne, LCDC IIMental Health Counselor1427543768
- Maleah Osborne, LPNLicensed Practical Nurse1598911828
- Maria OsborneCase Manager/Care Coordinator1386419216
- Jasmine Osborne-SambaBehavior Technician1104318021
- Kristy Osgood, DPMFoot & Ankle Surgery Podiatrist1750461943
- Richard Oshaughnessy, MDMaternal & Fetal Medicine Physician1285698704
- Pamela Oshell, STNAHome Health Aide1073109260
The largest Ohio cities
- Columbus36,491
- Cincinnati31,362
- Cleveland30,748
- Toledo13,583
- Akron10,950
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.