NPPES file of Aug 9, 2026

Doctors and health care providers in Westerville, OH

3,300 individual NPPES records list a practice address in Westerville, 10th of 711 Ohio cities. The largest group is behavior technician: 314, 10% of the city's records, against 2% across Ohio. Page 43 of 66.

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

Westerville in Ohio

  • Rank in Ohio10th of 711 cities by records
  • Share of the state1% of Ohio's records
  • Specialties present25 or more taxonomy codes
  • Top three groups21.4% of all records
  • Behavior Technician rank6th of the 10 Ohio cities with the most

Compared with Ohio as a whole, Westerville has 4.7× the state's share of behavior analyst records and 0.32× its share of case manager/care coordinator records.

Providers in Westerville, alphabetically

  1. Emile Roger Nounamo AamkoumeuLicensed Practical Nurse1801163753
  2. John Novak, M.D.Clinical Neurophysiology Physician1619195880
  3. Jennifer Nowak, D.C.Chiropractor1790880029
  4. Michael Nowell, DCChiropractor1487152500
  5. Edwin NsaamStudent in an Organized Health Care Education/Training Program1699669366
  6. Roxanne NtatiHome Health Aide1447960174
  7. Lisa Nugent, LMTMassage Therapist1720774748
  8. Jazmin Nunnally, RBTBehavior Technician1043890023
  9. Cori O'BoyleBehavior Technician1760950083
  10. Abigail O'Connor, LPCMental Health Counselor1447965215
  11. Brittany O'Connor, MAStudent in an Organized Health Care Education/Training Program1982937751
  12. Christina O'Donnell, LMTMassage Therapist1154888253
  13. Elizabeth O'Donnell, BS, RBTBehavior Technician1700483914
  14. Shelby O'DonnellAthletic Trainer1134834724
  15. Molly O'Driscoll, LPCProfessional Counselor1023732336
  16. Kelsey O'Meara, DPTPhysical Therapist1306328117
  17. Meghan O'Shaughnessy, DDSGeneral Practice Dentistry1790479475
  18. Craig O'Sullivan, M.D.Family Medicine Physician1083755169
  19. Samuel Oakley, MABehavior Technician1366069809
  20. Connor OatesAthletic Trainer1780156224
  21. Oreoluwa ObayemiBehavior Technician1205571569
  22. Abosede ObikunleRegistered Nurse1720394026
  23. Chelsea Obrock, BSStudent in an Organized Health Care Education/Training Program1427368802
  24. John Odackal, M.D.Pulmonary Disease Physician1093177511
  25. Clayton Odenweller, D.D.S.Dentist1124465075
  26. Alayna Odom, RBTBehavior Technician1588443741
  27. Yvonne Oduro, NPFamily Nurse Practitioner1518837616
  28. Buruwaa Offeh NimohLicensed Practical Nurse1710862073
  29. Esther OgundareLicensed Practical Nurse1295389740
  30. Oluwatimilehin OgunsinaHomemaker1831958651
  31. Victory OguntuyiHomemaker1891523916
  32. Hanul Oh, DDSDentist1912331695
  33. David Ohle, O.D.Optometrist1457350530
  34. Vandana Ohri, MDInternal Medicine Physician1841796323
  35. Benjamin Okenge, PT, DPT, CSCSPhysical Therapist1619855954
  36. Jacob Olding, O.D.Optometrist1801051206
  37. Hope OlecknicheBehavior Technician1073081477
  38. Terry Olejko, D.D.S.Oral and Maxillofacial Surgery (Dentist)1942376199
  39. Melanie Olivieri, RBTBehavior Technician1174266894
  40. Stephanie Ollom, DDSGeneral Practice Dentistry1649525213
  41. Krista Olson, M.D.Emergency Medicine Physician1629018783
  42. Mary Omalia, NPRegistered Nurse1518165687
  43. Umayma OmarBehavior Technician1063376747
  44. Kimberly Oppliger, MSWClinical Social Worker1366566218
  45. Abigail OrallBehavior Technician1821832825
  46. Sondra Orzechowski, PTPhysical Therapist1023083581
  47. Joyce Osafo Wadie, LPNLicensed Practical Nurse1144566936
  48. Elizabeth OsbornCase Manager/Care Coordinator1215299599
  49. Stephani Osborne, ATCAthletic Trainer1215386289
  50. Belinda OseiPsychiatric/Mental Health Nurse Practitioner1225996663

The largest Ohio cities

  1. Columbus36,491
  2. Cincinnati31,362
  3. Cleveland30,748
  4. Toledo13,583
  5. Dayton12,431

All of Ohio →

How to read this directory

Westerville, Ohio appears in the CMS National Plan and Provider Enumeration System with 3,300 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 Westerville - 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 Westerville 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 Westerville is weighted toward Behavior Technician (314 clinicians, followed by Student in an Organized Health Care Education/Training Program with 265 and Clinical Social Worker with 127). 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, Westerville reports roughly 28 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 Ohio's most common specialties, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Westerville practice address, a coverage gap Westerville patients typically fill by traveling to a larger nearby hub.

For Westerville 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 Westerville, OH?

There are 3,300 registered healthcare providers in Westerville, OH, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Westerville?

The most common specialties in Westerville are Behavior Technician, Student in an Organized Health Care Education/Training Program, Clinical Social Worker, Physical Therapist, Case Manager/Care Coordinator. Behavior Technician has the most providers with 314.

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.