NPPES file of Aug 9, 2026

Doctors and health care providers in Phoenix, AZ

31,399 individual NPPES records list a practice address in Phoenix, 1st of 137 Arizona cities. The largest group is students in training: 1,583, 5% of the city's records, against 3% across Arizona. Page 417 of 628.

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

The 8 largest groups in Phoenix

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

Phoenix in Arizona

  • Rank in Arizona1st of 137 cities by records
  • Share of the state24.9% of Arizona's records
  • Specialties present25 or more taxonomy codes
  • Top three groups14.3% of all records
  • Students in training rank1st of the 10 Arizona cities with the most

Compared with Arizona as a whole, Phoenix has 1.9× the state's share of student in an organized health care education/training program records and 0.75× its share of general practice dentistry records.

Providers in Phoenix, alphabetically

  1. Eugenia OnwuchekwaRegistered Nurse1831804871
  2. Theresa OnwuchekwaBehavior Technician1467031377
  3. Kimberly Onwuzurumba, NPFamily Nurse Practitioner1508440942
  4. Daniel Onyango, RPHPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1497438899
  5. Emmanuel OnyeaniPsychiatric/Mental Health Nurse Practitioner1194215673
  6. Henry Onyirimba, MDInternal Medicine Physician1003876061
  7. Peggy Oomens, RDNPediatric Nutrition Registered Dietitian1801351903
  8. Reginald Opara, M.D.Anesthesiology Physician1528064151
  9. Eddu Oparie-AddohPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1831403617
  10. Danica Oparnica, CANPPsychiatric/Mental Health Nurse Practitioner1760532477
  11. Kathleen Opel, N.N.P.Neonatal Nurse Practitioner1033191515
  12. Michael Opel, R N F ASpecialist1003856683
  13. Daniel Openden, PH.D., BCBA-DBehavior Analyst1649412362
  14. Danielle OppedisanoCritical Care Medicine Registered Nurse1669304143
  15. Jared Oppelt, MPH, RDNRegistered Dietitian1548738792
  16. Randy Oppenheimer, MDOtolaryngology Physician1083633796
  17. Mark Oppenlander, MDNeurological Surgery Physician1033373998
  18. Harley Opperman, PA-CPhysician Assistant1093936569
  19. Frank Oppong-Takyi, MDInternal Medicine Physician1497770465
  20. Dawn Oprandy, WHNPWomen's Health Nurse Practitioner1548514326
  21. Florinella Oprescu, MDGastroenterology Physician1821068057
  22. Dana Opsahl, PHARMDPharmacist1013248707
  23. Catherine Opuroku, LPNLicensed Practical Nurse1235347204
  24. Brian Oran, PHARMD.Pharmacist1730465782
  25. Chukwuemeka Oranyeli, MDFamily Medicine Physician1720192727
  26. Meagan Orban, M.S., OTR/LOccupational Therapist1306153978
  27. Richard Orbon, M.D.Orthopaedic Surgery Physician1992739486
  28. Amberlee Orchard, LACMental Health Counselor1124848270
  29. Brook Orchard, SLPSpeech-Language Pathologist1831635713
  30. John Orchard, MDCardiovascular Disease Physician1619974078
  31. Bradley Ordener, PHARMD, BCPSPharmacotherapy Pharmacist1861939761
  32. Belinda Ordonez, FNP-BCFamily Nurse Practitioner1386993228
  33. Carol Lyn Ordynsky, O.D.Optometrist1659537330
  34. George Ordynsky, ODOptometrist1407910920
  35. Robert Orenstein, DOInfectious Disease Physician1174500565
  36. Susan Oreshack, DPTPhysical Therapist1568862696
  37. Gary Oreskovich, D.D.S.General Practice Dentistry1295846178
  38. David OriabureBehavior Technician1982167532
  39. Rosine Oriabure, DNP, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1083268874
  40. Taylor Oribello, LMFTMental Health Counselor1003700741
  41. Michael OrlichPhysical Therapist1396315032
  42. Andria Orlowski, NMDNaturopath1609024025
  43. David OrlowskiProfessional Counselor1285965509
  44. Jennifer Orlowski, NDNaturopath1518445931
  45. Geoffrey Orme, DOInternal Medicine Physician1386906881
  46. Kaitlynn OrmistonStudent in an Organized Health Care Education/Training Program1225952500
  47. Brandon OrmsbyStudent in an Organized Health Care Education/Training Program1154245314
  48. William OrmsbyOccupational Therapist1366878720
  49. Mary OrmsonAudiologist1891863908
  50. Emily OrnBehavior Analyst1013450642

The largest Arizona cities

  1. Tucson18,788
  2. Scottsdale11,008
  3. Mesa9,151
  4. Gilbert5,802
  5. Chandler5,497

All of Arizona →

How to read this directory

Phoenix, Arizona appears in the CMS National Plan and Provider Enumeration System with 31,399 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 Phoenix - 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 Phoenix 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 Phoenix is weighted toward Student in an Organized Health Care Education/Training Program (1,583 clinicians, followed by Pharmacist with 1,483 and Behavior Technician with 1,422). 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 Arizona's population, Phoenix reports roughly 422.5 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 Phoenix 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 Phoenix, AZ?

There are 31,399 registered healthcare providers in Phoenix, AZ, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Phoenix?

The most common specialties in Phoenix are Student in an Organized Health Care Education/Training Program, Pharmacist, Behavior Technician, Family Nurse Practitioner, Physical Therapist. Student in an Organized Health Care Education/Training Program has the most providers with 1,583.

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.