NPPES file of Aug 9, 2026

Doctors and health care providers in Orange, CA

13,245 individual NPPES records list a practice address in Orange, 11th of 812 California cities. The largest group is behavior technician: 4,271, 32% of the city's records, against 18% across California. Page 14 of 265.

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

The 8 largest groups in Orange

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

Orange in California

  • Rank in California11th of 812 cities by records
  • Share of the state1.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups42% of all records
  • Behavior Technician rank7th of the 10 California cities with the most

Compared with California as a whole, Orange has 7.3× the state's share of other technician records and 0.43× its share of physical therapist records.

Providers in Orange, alphabetically

  1. Liliana ArzateBehavior Technician1174398077
  2. Ashley ArzolaSchool Counselor1861330227
  3. Akemi Arzouman, DMDPeriodontics1750805099
  4. Michael Arzouman, D.D.S.Periodontics1588778039
  5. Sergey ArzumanyanPharmacist1609682921
  6. Megan Asadian, MDStudent in an Organized Health Care Education/Training Program1386144095
  7. Masumi Asahi, DOOphthalmology Physician1962963769
  8. Michelle AsareBehavior Technician1013789726
  9. Aram Asatrian, MD, PHDNeurology Physician1053989293
  10. Noah AsayBehavior Technician1346963634
  11. Sandra Asche, RNCommunity Health Registered Nurse1851572390
  12. Joey Asfahan, MDFamily Medicine Physician1639706211
  13. Judith AshAddiction (Substance Use Disorder) Counselor1548780141
  14. Robert Ash, MDRadiation Oncology Physician1326238650
  15. Megan Asher, FNPFamily Nurse Practitioner1871091629
  16. Gautami AshokClinical Psychologist1982203568
  17. Negar Ashouri, M.D.Pediatric Infectious Diseases Physician1275630154
  18. Kimberley AshtonBehavior Technician1770443830
  19. Sandra Ashwood, LVNLicensed Vocational Nurse1770760241
  20. Gina Askar, MDInfectious Disease Physician1376168468
  21. Sumayya AslamStudent in an Organized Health Care Education/Training Program1023746708
  22. Dilara Aslan, PMHNPPsychiatric/Mental Health Nurse Practitioner1588524821
  23. Azin Asli, PH.D.Clinical Psychologist1013005842
  24. Carllene Aspuria, BCBABehavior Analyst1912416678
  25. Rajkumari V Asrani, MDAnesthesiology Physician1699855775
  26. Welansa Asrat, M.D.Psychiatry Physician1154555274
  27. Samer Assaf, M.D.Emergency Medicine Physician1659785970
  28. Marian Assal, MDInternal Medicine Physician1669630596
  29. Adriana Assenti, RDRegistered Dietitian1669317616
  30. Erika AssounStudent in an Organized Health Care Education/Training Program1992653174
  31. Alexandria AstenBehavior Technician1538934377
  32. Kristine Astvatsaturyan, M.D.Anatomic Pathology & Clinical Pathology Physician1366880692
  33. Negar AtashpanjehPharmacist1073988143
  34. Sienna AtendidoBehavior Technician1578242533
  35. Paul Athanasius, D.D.SGeneral Practice Dentistry1942538160
  36. Jesse AthertonBehavior Technician1386572279
  37. Minahil AtiqBehavior Technician1942154968
  38. Aorzala AtmarStudent in an Organized Health Care Education/Training Program1548108368
  39. Zina AtshanBehavior Technician1992692040
  40. Mirna AttaBehavior Technician1073465738
  41. Negin AttarBehavior Technician1275363483
  42. Shirin Attarian, M.D.Hematology & Oncology Physician1427310713
  43. Sanaz Attaripour-Isfahani, M.D.Neurology Physician1821438805
  44. Mark AttiaBehavior Technician1396540423
  45. Mariana Atuesta BecerraBehavior Technician1447112990
  46. Brian Au, D.P.M.Podiatrist1508392572
  47. Christine Au, DOPsychiatry Physician1740741305
  48. Scott Au, M.D.Pain Medicine (Physical Medicine & Rehabilitation) Physician1013165406
  49. Dean Aubin, M.D.Emergency Medicine Physician1932391869
  50. Pearl Audon, DOStudent in an Organized Health Care Education/Training Program1396599239

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

Orange, California appears in the CMS National Plan and Provider Enumeration System with 13,245 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 Orange - 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 Orange 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 Orange is weighted toward Behavior Technician (4,271 clinicians, followed by Student in an Organized Health Care Education/Training Program with 870 and Marriage & Family Therapist with 424). 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 California's population, Orange reports roughly 34 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.

Of California's most common specialties, Case Manager/Care Coordinator is the most prominent one with no provider currently listing a Orange practice address, a coverage gap Orange patients typically fill by traveling to a larger nearby hub.

For Orange 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 Orange, CA?

There are 13,245 registered healthcare providers in Orange, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Orange?

The most common specialties in Orange are Behavior Technician, Student in an Organized Health Care Education/Training Program, Marriage & Family Therapist, Clinical Social Worker, Mental Health Counselor. Behavior Technician has the most providers with 4,271.

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.