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 240 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. Chinh TranAnesthesiology Physician1952920803
  2. Chloe TranBehavior Analyst1811455504
  3. Crystal TranBehavior Technician1689590473
  4. Daniel Tran, DOStudent in an Organized Health Care Education/Training Program1487408506
  5. Demi TranNeurology Physician1003235219
  6. Diana TranBehavior Technician1578430401
  7. Edward Tran, ODOptometrist1124558069
  8. Ellie TranBehavior Technician1053021170
  9. Elliott TranBehavior Analyst1811611981
  10. Evelyn TranCounselor1003076316
  11. Faustina TranBehavior Technician1891683827
  12. Han TranBehavior Technician1780822957
  13. Hanh TranAssistant Behavior Analyst1376120469
  14. Hau TranBehavior Technician1174318919
  15. Hung Tran, M.D.Pediatric Hematology & Oncology Physician1942408562
  16. Hung TranPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1922976877
  17. Huy Thai Tran, DOFamily Medicine Physician1578657847
  18. Isabelle TranBehavior Technician1144969445
  19. Ivy TranBehavior Technician1639865389
  20. Jane Tran, MDPediatrics Physician1164282133
  21. Jasmine TranBehavior Technician1518796325
  22. John Tran, M.D.Neonatal-Perinatal Medicine Physician1477780864
  23. John TranBehavior Technician1982576542
  24. Johnny Tran, PHARMDPharmacist1093301285
  25. Jonathan TranBehavior Technician1770467573
  26. Julie TranCase Manager/Care Coordinator1396926341
  27. Karen TranStudent in an Organized Health Care Education/Training Program1538021001
  28. Katelin TranAssistant Behavior Analyst1699430942
  29. Katelynn TranBehavior Technician1164170536
  30. Katherine TranBehavior Technician1952050247
  31. Katherine TranBehavior Technician1821833369
  32. Kaylee TranBehavior Technician1659220432
  33. Kim Tran, RN, APNNurse Practitioner1891235230
  34. Kim TranBehavior Analyst1568071090
  35. Krystal TranBehavior Technician1619706413
  36. Lauren Tran, PHARMDPharmacist1073798708
  37. Lisa Tran, DDS MDOral & Maxillofacial Surgery (D.M.D.)1588980767
  38. Loan TranBehavior Technician1619851219
  39. Mai-Lan TranStudent in an Organized Health Care Education/Training Program1245926583
  40. Mark Tran, M.D.Nuclear Radiology Physician1316382377
  41. Melissa TranCertified Registered Nurse Anesthetist1720890593
  42. Michael Tran, MDSpecialist1073552295
  43. Michelle Tran, PHARM.D.Pharmacist1962947119
  44. Michelle TranBehavior Technician1245051689
  45. Mimi TranBehavior Analyst1407324361
  46. Minh TranBehavior Technician1013752559
  47. Nancy Tran, NONEBehavior Technician1659016780
  48. Nancy TranBehavior Technician1871287557
  49. Nga TranPharmacist1396031159
  50. Ngoc TranCase Manager/Care Coordinator1720229099

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.