NPPES file of Aug 9, 2026

Doctors and health care providers in Indianapolis, IN

30,493 individual NPPES records list a practice address in Indianapolis, 1st of 269 Indiana cities. The largest group is students in training: 3,054, 10% of the city's records, against 4% across Indiana. Page 397 of 610.

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

The 8 largest groups in Indianapolis

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

Indianapolis in Indiana

  • Rank in Indiana1st of 269 cities by records
  • Share of the state25.4% of Indiana's records
  • Specialties present25 or more taxonomy codes
  • Top three groups24.2% of all records
  • Students in training rank1st of the 10 Indiana cities with the most

Compared with Indiana as a whole, Indianapolis has 2.6× the state's share of student in an organized health care education/training program records and 0.63× its share of behavior technician records.

Providers in Indianapolis, alphabetically

  1. Ella O'Connell, DDSDentist1952141855
  2. Michael O'Connell, LMFTAMarriage & Family Therapist1114583721
  3. Aimee O'Connor, RNRegistered Nurse1386030641
  4. Angelica O'Connor, LCSWClinical Social Worker1538735154
  5. Caitlin O'ConnorPhysical Therapist1265838734
  6. Cali O'Connor, LCSWClinical Social Worker1760170237
  7. Cole O'ConnorPharmacist1790608354
  8. Crista O'Connor, FNP-CFamily Nurse Practitioner1538667605
  9. Deborah O'Connor, CRNPNurse Practitioner1497966741
  10. John O'Connor, M.D.Internal Medicine Physician1700053816
  11. Mary O'Connor, MDStudent in an Organized Health Care Education/Training Program1760229579
  12. Megan O'Connor, P.T.Physical Therapist1255395356
  13. Michele O'Connor, NPAdult Health Nurse Practitioner1659685915
  14. Sean O'Connor, M.D.Addiction Psychiatry Physician1194736868
  15. Stephen O'Connor, MDInternal Medicine Physician1881398758
  16. Suzanne O'Connor, AU.D.Audiologist-Hearing Aid Fitter1467634105
  17. Eileen O'Connor McFerran, DOObstetrics & Gynecology Physician1063919017
  18. Pamela O'Dea, MDNeurology Physician1851755656
  19. Monica O'Doherty, DOAnesthesiology Physician1649773854
  20. Daniel O'Donnell, MDEmergency Medicine Physician1649489055
  21. Erin O'Donnell, FNP-CFamily Nurse Practitioner1427594142
  22. Jacqueline O'Donnell, M.D.Cardiovascular Disease Physician1225093826
  23. Jacquelyn O'Donnell, PA-CPhysician Assistant1518402767
  24. Kaitlyn O'DonnellStudent in an Organized Health Care Education/Training Program1710799473
  25. Lillian O'DonnellStudent in an Organized Health Care Education/Training Program1285526418
  26. Mary O'Donnell, PSY.D.Clinical Psychologist1588645162
  27. Patrick O'DonnellStudent in an Organized Health Care Education/Training Program1861310930
  28. Paula O'Donnell, ANPAdult Health Nurse Practitioner1801212857
  29. Stacia O'Donnell, LCSWClinical Social Worker1801249297
  30. Erin O'FarrellStudent in an Organized Health Care Education/Training Program1023827680
  31. Kaylee O'Farrell, RNEmergency Registered Nurse1326868753
  32. Leah O'Gara, DDSDentist1336878818
  33. Mary Jeanne O'Gara, MDInternal Medicine Physician1952453409
  34. Margaret O'Grady, NPNurse Practitioner1538126180
  35. Stephanie O'Guin, LCSWClinical Social Worker1427931658
  36. Christine O'HaraCase Manager/Care Coordinator1720572944
  37. Julia O'Hara, CPNP, CPN, CPHONPediatric Nurse Practitioner1912370636
  38. Lisa O'Hara, PHARM.D.Pharmacotherapy Pharmacist1063463644
  39. Shannon O'Hara, LMHCSchool Counselor1093064453
  40. Vj O'Hara, PHARMDOncology Pharmacist1891130217
  41. Nikia O'HearnAssistant Behavior Analyst1548822034
  42. Taylor O'Hern, LMHCAMental Health Counselor1760057525
  43. Brock O'KeefeOncology Pharmacist1821933953
  44. Courtney O'Keefe, PHARMD, RPHPharmacist1871266866
  45. Sheila O'KeeffeSpeech-Language Pathologist1700643285
  46. Ollie O'KelleyBehavior Technician1538876651
  47. Brian O'Leary, M.D.Interventional Cardiology Physician1255523940
  48. Geoffrey O'MalleyStudent in an Organized Health Care Education/Training Program1811799331
  49. Amanda O'Mara, M.D.Anesthesiology Physician1174784532
  50. Casey O'Neal, CPNPPediatric Nurse Practitioner1437762796

The largest Indiana cities

  1. Fort Wayne9,203
  2. Evansville4,352
  3. Carmel3,727
  4. Bloomington3,287
  5. South Bend3,178

All of Indiana →

How to read this directory

Indianapolis, Indiana appears in the CMS National Plan and Provider Enumeration System with 30,493 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 Indianapolis - 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 Indianapolis 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 Indianapolis is weighted toward Student in an Organized Health Care Education/Training Program (3,054 clinicians, followed by Behavior Technician with 2,740 and Clinical Social Worker with 1,574). 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 Indiana's population, Indianapolis reports roughly 444.4 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 Indianapolis 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 Indianapolis, IN?

There are 30,493 registered healthcare providers in Indianapolis, IN, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Indianapolis?

The most common specialties in Indianapolis are Student in an Organized Health Care Education/Training Program, Behavior Technician, Clinical Social Worker, Mental Health Counselor, Pharmacist. Student in an Organized Health Care Education/Training Program has the most providers with 3,054.

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.