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 242 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. Luis TrejoBehavior Technician1679254932
  2. Matthew TrejoBehavior Technician1134804230
  3. Paola TrejoBehavior Analyst1679289037
  4. Paola Trejo LopezBehavior Technician1659167104
  5. Patriena Trejo-JonesBehavior Technician1790578599
  6. Haley TrenastyBehavior Technician1134852809
  7. Beverlyn TrenholmBehavior Technician1164384996
  8. Katie TrentBehavior Technician1437718939
  9. Cody Trepte, DOPediatrics Physician1144979097
  10. Nidia TressBehavior Technician1942018007
  11. Anabel TrevillaSocial Worker1114708377
  12. Brittany TrevinoStudent in an Organized Health Care Education/Training Program1093664039
  13. Blanca Trevino-Scatterday, MDAddiction Medicine (Internal Medicine) Physician1447321427
  14. Enrique TrianaBehavior Technician1164388690
  15. Justin Trichter, LMFTMarriage & Family Therapist1154929347
  16. Harvey Triebwasser, MDPediatrics Physician1144352840
  17. Harry Trieu, MDStudent in an Organized Health Care Education/Training Program1518616457
  18. John TrieuNurse Practitioner1528478112
  19. Kevin Triggs, M.D.Specialist1699762500
  20. Bhavesh TrikamjiAddiction Medicine (Psychiatry & Neurology) Physician1295114197
  21. Isaac Trimble, MDEmergency Medicine Physician1770515454
  22. Eily TrimmBehavior Technician1457287856
  23. Elizabeth Trimmer, PA-CPhysician Assistant1669107751
  24. Amy TrinhBehavior Technician1679259675
  25. Julianne TrinhBehavior Technician1114710431
  26. Kevin TrinhBehavior Technician1447940382
  27. Lien Trinh, M.D.Pediatric Endocrinology Physician1518082304
  28. Tai Trinh, BA-SOCIOLOGYRehabilitation Practitioner1063508950
  29. Tam TrinhBehavior Technician1083345706
  30. Rosa TrinidadBehavior Technician1619706926
  31. Katharine TriplettPrimary Care Nurse Practitioner1851213763
  32. Olivia TriplettStudent in an Organized Health Care Education/Training Program1417638024
  33. Kashyap Trivedi, MDGastroenterology Physician1649307356
  34. Athena Trombley, FNPFamily Nurse Practitioner1619402872
  35. Thuha Truax, N.P.-C, MSNNurse Practitioner1346474467
  36. Desiree Trujeque, LMFTMarriage & Family Therapist1740705268
  37. Elizabeth TrujilloBehavior Technician1205655859
  38. Erika TrujilloRehabilitation Practitioner1003469735
  39. Guillermo TrujilloBehavior Technician1548128218
  40. Marcos TrujilloBehavior Technician1447970298
  41. Jessica Trujillo CruzBehavior Technician1811741143
  42. Andrew TruongStudent in an Organized Health Care Education/Training Program1225897440
  43. Anh Thu TruongBehavior Technician1710699574
  44. Annie Truong, APRNNurse Practitioner1386157642
  45. Catherine TruongBehavior Technician1154949253
  46. Cecile Truong, RN, PHNCommunity Health Registered Nurse1467633925
  47. Chelsea TruongBehavior Technician1871368126
  48. Ethan TruongBehavior Technician1538967286
  49. Hieu Truong, M.D.Diagnostic Radiology Physician1194724617
  50. Jennifer Truong, DDSGeneral Practice Dentistry1942377312

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.