NPPES file of Aug 9, 2026

Doctors and health care providers in Columbus, OH

36,491 individual NPPES records list a practice address in Columbus, 1st of 711 Ohio cities. The largest group is case manager/care coordinator: 3,958, 11% of the city's records, against 11% across Ohio. Page 166 of 730.

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

The 8 largest groups in Columbus

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

Columbus in Ohio

  • Rank in Ohio1st of 711 cities by records
  • Share of the state11.2% of Ohio's records
  • Specialties present25 or more taxonomy codes
  • Top three groups19.6% of all records
  • Case Manager/Care Coordinator rank1st of the 10 Ohio cities with the most

Compared with Ohio as a whole, Columbus has 1.8× the state's share of anesthesiology physician records and 0.59× its share of physical therapist records.

Providers in Columbus, alphabetically

  1. Kathleen Diedalis, CST/CSFASurgical Assistant1366578981
  2. Michelle Diederich, CNPAcute Care Nurse Practitioner1356659213
  3. Karen Diefenbach, M.D.Pediatric Surgery Physician1164658258
  4. Ellen Diefenderfer, PA-CPhysician Assistant1073909289
  5. Devale Diehl, CDCA IIAddiction (Substance Use Disorder) Counselor1821966474
  6. Jason Diehl, MDSports Medicine (Family Medicine) Physician1982661013
  7. Jerry DiehlPersonal Care Attendant1871935346
  8. Kelsey Diehl, NP-CNurse Practitioner1497284301
  9. Stephanie Diehlmann, MDFamily Medicine Physician1790885283
  10. Sarah Diemand, MS OTR/LSpecialist1023434123
  11. Mark DiemerPastoral Counselor1669272506
  12. Tokeshia DiengCase Manager/Care Coordinator1891375309
  13. Molly Dienhart, MDPediatric Gastroenterology Physician1568671568
  14. Peter Dienhart, MDAnesthesiology Physician1164649588
  15. Michael Dienstbach, MDInternal Medicine Physician1215432604
  16. Ashley Dierkes, PAPhysician Assistant1174874382
  17. Caleb DiersingCase Manager/Care Coordinator1447067657
  18. Lynsey Diersing, RNFamily Nurse Practitioner1043744535
  19. Sarah Dieter, O.DOptometrist1902036700
  20. Emily DietrichPsychologist1033768148
  21. Kathleen Dietrich, NNPNeonatal Nurse Practitioner1710773163
  22. David Dietz, PHDPsychologist1982669180
  23. Jacob Dietz, DPTPhysical Therapist1427629187
  24. Lynsie Dietz, LPCProfessional Counselor1770331407
  25. Paige DietzPhysical Therapist1891668786
  26. Penelope Dietz, DDSGeneral Practice Dentistry1033262597
  27. Nene DieyeBehavior Technician1225968399
  28. Alejandro Diez, MDNephrology Physician1669670782
  29. James Difranco, D.D.S.Dental Anesthesiology1023428489
  30. Andrew DiggsPeer Specialist1639743578
  31. Elizabeth Digiannantoni, RNRegistered Nurse1730996695
  32. Jason Digiannantoni, LISW-SSocial Worker1275683534
  33. Naomi DigiantonioPharmacist1679313456
  34. Jillian DigiorgioRegistered Nurse1851240170
  35. Ava DigirolamoStudent in an Organized Health Care Education/Training Program1225976764
  36. Rachel DigregorioMedical Physician Assistant1699585117
  37. Michelle Dihoff, CNPNurse Practitioner1326219130
  38. Rebekah Dike, DOStudent in an Organized Health Care Education/Training Program1700726940
  39. Roselinde DikeCase Manager/Care Coordinator1447897301
  40. Zosimo Dikitsas, LSWSocial Worker1043987217
  41. Chendra Dikko, AGAC NPGerontology Nurse Practitioner1669134847
  42. Clarissa Dilaveris, RD, LDRegistered Dietitian1275168411
  43. Courtney Dilcher, ATCAthletic Trainer1205293040
  44. Briawna Dildy, DDS, MSStudent in an Organized Health Care Education/Training Program1194582791
  45. Nancy Diley-SmithCase Manager/Care Coordinator1477392926
  46. Michael DillHome Health Aide1982460960
  47. Jay DillahuntLicensed Practical Nurse1285378307
  48. Alisa Dillard, LSWSocial Worker1023553518
  49. Chanelle Dillard, LPNLicensed Practical Nurse1932413218
  50. Harold Dillard, LMT CNMTMassage Therapist1003688508

The largest Ohio cities

  1. Cincinnati31,362
  2. Cleveland30,748
  3. Toledo13,583
  4. Dayton12,431
  5. Akron10,950

All of Ohio →

How to read this directory

Columbus, Ohio appears in the CMS National Plan and Provider Enumeration System with 36,491 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 Columbus - 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 Columbus 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 Columbus is weighted toward Case Manager/Care Coordinator (3,958 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,724 and Social Worker with 1,484). 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, Columbus reports roughly 309.6 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 Columbus 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 Columbus, OH?

There are 36,491 registered healthcare providers in Columbus, OH, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Columbus?

The most common specialties in Columbus are Case Manager/Care Coordinator, Student in an Organized Health Care Education/Training Program, Social Worker, Clinical Social Worker, Pharmacist. Case Manager/Care Coordinator has the most providers with 3,958.

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.