NPPES file of Aug 9, 2026

Doctors and health care providers in Honolulu, HI

12,408 individual NPPES records list a practice address in Honolulu, 1st of 66 Hawaii cities. The largest group is behavior technician: 1,384, 11% of the city's records, against 17% across Hawaii. Page 164 of 249.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Honolulu

  1. Behavior Technician1,384
  2. Internal Medicine Physician579
  3. Pharmacist495
  4. Physical Therapist422
  5. Clinical Social Worker383
  6. Mental Health Counselor373
  7. Behavior Analyst371
  8. Registered Nurse357

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

Honolulu in Hawaii

  • Rank in Hawaii1st of 66 cities by records
  • Share of the state38.7% of Hawaii's records
  • Specialties present25 or more taxonomy codes
  • Top three groups19.8% of all records
  • Behavior Technician rank1st of the 10 Hawaii cities with the most

Compared with Hawaii as a whole, Honolulu has 1.7× the state's share of anesthesiology physician records and 0.57× its share of family medicine physician records.

Providers in Honolulu, alphabetically

  1. Reynaldo OlivaPhysical Therapist1346711975
  2. Arnaldo Oliveira, PH.D., L.AC.Acupuncturist1548540974
  3. Catherine Oliver, M.D.Emergency Medicine Physician1669400982
  4. Justin Oliver, MSWClinical Social Worker1770735037
  5. Kathleen Oliver, DMDStudent in an Organized Health Care Education/Training Program1164957882
  6. Mark OlivieriMental Health Counselor1730562901
  7. Arie Olivo Ganz, M.D.Nephrology Physician1720357403
  8. John Olkowski, M.D.Ophthalmology Physician1396897427
  9. Tina Olkowski, MDEmergency Medicine Physician1457432916
  10. Lindsay Olmstead, P.T.Physical Therapist1740548288
  11. Amy OlsenPsychiatric/Mental Health Registered Nurse1134002488
  12. Kathryn OlsenBehavior Technician1417610650
  13. Megan Olson, MS, RDRegistered Dietitian1093514606
  14. Heather OmalleyPhysical Therapist1861714107
  15. Dee Ann Omatsu, P.N.P.Pediatric Nurse Practitioner1851523211
  16. Jase Omizo, MDInternal Medicine Physician1891632766
  17. Michael Omizo, PHDClinical Psychologist1619148657
  18. Reese Omizo, M.D.Internal Medicine Physician1124078597
  19. William OmohundroBehavior Technician1306483516
  20. Masayo Omori, SLPSpeech-Language Pathologist1801016548
  21. Sean Omori, M.D.Internal Medicine Physician1588751630
  22. Aaron Omura, DMDGeneral Practice Dentistry1073947677
  23. Clifford Omura, D.D.S.General Practice Dentistry1073603619
  24. Fernando Ona, MDGastroenterology Physician1811934748
  25. Kristin OnagaSocial Worker1811741424
  26. Stacey Onaga, RNDiabetes Educator Registered Nurse1699242800
  27. Edith OnanugaCase Manager/Care Coordinator1467380345
  28. Saki Onda, MD, MPHObstetrics & Gynecology Physician1376930909
  29. Autumn OnderkoBehavior Technician1366177297
  30. Albert OngStudent in an Organized Health Care Education/Training Program1528941473
  31. Antonio Ong, MDSpecialist1033424528
  32. Bruce Ong, M.D., M.P.HAllergy & Immunology Physician1790872646
  33. Sharon OngFamily Medicine Physician1487751640
  34. Nadia Onishi-MiyakePeer Specialist1972219145
  35. Neil Onizuka, MDHospitalist Physician1437577400
  36. Arlene Ono, OTR, CHTOccupational Therapist1730272295
  37. Ashley Ono, MDInternal Medicine Physician1720245400
  38. David Ono, M.D.Nephrology Physician1073557096
  39. Eric Ono, D.AC. (HAWAII)Acupuncturist1104048032
  40. Jerry Ono, PTPhysical Therapist1194811604
  41. Jill Ono, MDAnatomic Pathology & Clinical Pathology Physician1952437691
  42. Marissa OnoRegistered Dietitian1851877096
  43. Nami Ono, CNMAdvanced Practice Midwife1568028108
  44. Samantha Ono, DPTPhysical Therapist1649197153
  45. Warren Ono, MDGastroenterology Physician1093751166
  46. Janet Onopa, MDInternal Medicine Physician1619039856
  47. Mia OnoratoBehavior Analyst1346857125
  48. Summer OntaiMental Health Counselor1548577174
  49. Lisandra Ontivero, BSN, RNSchool Registered Nurse1962093716
  50. Perseus Lee OntiverosBehavior Technician1205642980

The largest Hawaii cities

  1. Hilo1,758
  2. Waipahu1,605
  3. Aiea1,481
  4. Kailua1,421
  5. Wailuku1,087

All of Hawaii →

How to read this directory

Honolulu, Hawaii appears in the CMS National Plan and Provider Enumeration System with 12,408 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 Honolulu - 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 Honolulu 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 Honolulu is weighted toward Behavior Technician (1,384 clinicians, followed by Internal Medicine Physician with 579 and Pharmacist with 495). 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 Hawaii's population, Honolulu reports roughly 864.6 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 Honolulu 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 Honolulu, HI?

There are 12,408 registered healthcare providers in Honolulu, HI, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Honolulu?

The most common specialties in Honolulu are Behavior Technician, Internal Medicine Physician, Pharmacist, Physical Therapist, Clinical Social Worker. Behavior Technician has the most providers with 1,384.

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.