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 64 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. Lianjie Du, M.D.Psychiatry Physician1255331385
  2. Na Du, PSY.D.Clinical Psychologist1760229736
  3. Anoushka Dua, MDGastroenterology Physician1740817576
  4. Andrea DuarteBehavior Technician1013781046
  5. Angelique DuarteBehavior Technician1396573457
  6. Carena DuarteBehavior Technician1477246098
  7. Evan DuarteCommunity Health Worker1700676665
  8. Francisco DuarteBehavior Technician1386531622
  9. Julio Duarte, MDAnesthesiology Physician1780862375
  10. Kaylee DuarteBehavior Technician1700428752
  11. Paul DuarteBehavior Technician1962106781
  12. Georgia DubowBehavior Technician1730848243
  13. Kevin DuenasBehavior Technician1801582515
  14. Steven DuffBehavior Technician1366110728
  15. Patrick DuffeyCase Manager/Care Coordinator1891062485
  16. Michael Dugan, M.D.Anatomic Pathology & Clinical Pathology Physician1649492745
  17. Erica Duh, MDInternal Medicine Physician1295239382
  18. Destiny DuhonBehavior Technician1922564129
  19. Dana DukicBehavior Technician1396303475
  20. Sarah Dull, AGACNP-BCNurse Practitioner1851048664
  21. Leonila DullaLicensed Psychiatric Technician1750088704
  22. Alyssa DumaineBehavior Technician1063070084
  23. Timothy DunaganAnesthesiology Physician1710628045
  24. Stefan DunauskasAdult Health Nurse Practitioner1891151148
  25. Susan Duncan, R.N.Ambulatory Care Registered Nurse1811227069
  26. Thunhi DuncanPharmacist1336676188
  27. Joanna Duncan SilvaBehavior Technician1144098765
  28. Kristin DuneBehavior Technician1891411724
  29. Robert Dunn, M.D.Specialist1861541732
  30. Valerie Dunn, LMFTMarriage & Family Therapist1417394974
  31. Cole DunnihooBehavior Technician1154279818
  32. Toni Dunning, MA, DMFT, LMFTMarriage & Family Therapist1336414812
  33. Molly DunnionBehavior Technician1699422147
  34. Alexander Duong, MDStudent in an Organized Health Care Education/Training Program1831891043
  35. Carolyn Duong, ODOptometrist1073878096
  36. Cathy Duong, LCGCGenetic Counselor (M.S.)1518786946
  37. Christina Duong, N.P.Primary Care Nurse Practitioner1770830499
  38. Dang Khoa T Duong, MDHospitalist Physician1346320488
  39. Gina Duong, BCBABehavior Analyst1144730110
  40. Heidi Duong, PHARM DPharmacist1073994802
  41. Hieu DuongBehavior Analyst1063380210
  42. Kevin Duong, DPTPhysical Therapist1558865519
  43. Kylaa DuongRehabilitation Practitioner1235534678
  44. Long Duong, MDStudent in an Organized Health Care Education/Training Program1538588843
  45. Mia DuongBehavior Technician1467175703
  46. Nga DuongMarriage & Family Therapist1558495143
  47. Suphattra DuongMassage Therapist1811347719
  48. Patty Dupont-Tyler, PNPPediatric Nurse Practitioner1871627422
  49. Emily DupuisBehavior Technician1639066103
  50. Joseph Duquesnel, M.F.T.Marriage & Family Therapist1033402987

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.