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 411 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. Jeffrey O'Connell, PHARM.D.Pharmacist1578871950
  2. Lakme O'ConnellPsychiatric/Mental Health Nurse Practitioner1356037345
  3. Roseann O'Connell, DNPPsychiatric/Mental Health Nurse Practitioner1588235204
  4. Sandra O'Connell, MS, LPCProfessional Counselor1174245500
  5. Ayrn O'Connor, M.D.Emergency Medicine Physician1194785063
  6. Brendan O'Connor, DCChiropractor1154538700
  7. Martha O'Connor, O.T.Occupational Therapist1922300920
  8. Peter O'Connor, M.D.Pediatrics Physician1982652996
  9. Suzanne O'Connor, PSYDClinical Neuropsychologist1396263919
  10. Clairissa O'Dea, LACMental Health Counselor1710242532
  11. Suzanne O'Dea, MA, NCSPSchool Psychologist1730467671
  12. Shelley O'Dell-Brock, DACAcupuncturist1336824689
  13. Anne O'Donnell, MA, BCBA, LBABehavior Analyst1134781487
  14. Brandon O'Donnell, LMSWSocial Worker1134973902
  15. Breana O'Donnell, LPNLicensed Practical Nurse1982156998
  16. Sheila O'Donnell, FNPFamily Nurse Practitioner1154847309
  17. Donna O'Flannigan, MS, RD, CSPRegistered Dietitian1134684772
  18. Jessica O'HairProfessional Counselor1871115097
  19. Alexandra O'Hannon, MSWSocial Worker1114254885
  20. Mandy O'Hara, M.D.Child Abuse Pediatrics Physician1467588855
  21. Shawn O'HaraRegistered Nurse First Assistant1467837393
  22. Brennan O'Hare, PHARMD.Pharmacist1427309590
  23. Aisya O'HaverBehavior Technician1730830829
  24. Judith O'Haver, PNPPediatric Nurse Practitioner1750342929
  25. Jennifer O'Hea, MDCritical Care Medicine (Internal Medicine) Physician1558338517
  26. Hannah O'LearyStudent in an Organized Health Care Education/Training Program1801728936
  27. Katie O'LoughlinBehavior Technician1134700479
  28. Cheryl O'Malley, M.D.Internal Medicine Physician1588633226
  29. Laura O'Malley, M.D.Internal Medicine Physician1366402216
  30. Mark O'Malley, D.O.Surgery Physician1083899686
  31. Stephanie O'Malley, DPTPediatric Physical Therapist1649656802
  32. Allison O'Mara, PSYDPsychologist1982843355
  33. Cornelia O'Marra, LCSWClinical Social Worker1730278672
  34. Marleigh O'Meara, LPCProfessional Counselor1417220575
  35. Joely O'NealPhysical Therapist1629306923
  36. Mollie O'Neil, M.S. CF-SLPSpeech-Language Pathologist1295408599
  37. Roy O'Neil, DOAnesthesiology Physician1275911968
  38. Ashley O'Neill, AGACNPAcute Care Nurse Practitioner1104685452
  39. Robert O'Neill, PHARMDPharmacist1871993030
  40. William O'Neill, MDStudent in an Organized Health Care Education/Training Program1750136842
  41. Melanie O'Rourke, M.A., CCC-SLPSpeech-Language Pathologist1538437538
  42. Sheila O'Shea, RNCritical Care Medicine Registered Nurse1033449392
  43. Debra O'Sullivan, PHARMDPharmacist1174783948
  44. Erin O'Sullivan, MDObstetrics & Gynecology Physician1336133511
  45. Renee O'Sullivan, NNPNeonatal Nurse Practitioner1033135744
  46. Heather O'Toole, M.D.Family Medicine Physician1992797880
  47. Lauren O'Toole, PT, DPTPhysical Therapist1114426129
  48. Raymond Oakes, MDAnesthesiology Physician1720053960
  49. Caitlin Oakey, MOT, OTR/LPediatric Occupational Therapist1346707924
  50. Angela Oakley, PMHNPPsychiatric/Mental Health Nurse Practitioner1104288620

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.