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 169 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. Devin NguyenBehavior Technician1740900505
  2. Diem-Tran Nguyen, MDAllergy & Immunology Physician1215498761
  3. Diem-Trinh Nguyen, DIEM-TRINH NGUYENGeneral Practice Dentistry1235369786
  4. Dieu NguyenOther Technician1275122350
  5. Duyen NguyenOther Technician1073195582
  6. Dylan NguyenBehavior Technician1043096233
  7. Eileen Nguyen, CRNACertified Registered Nurse Anesthetist1437790508
  8. Elaine NguyenBehavior Technician1730852757
  9. Elizabeth NguyenBehavior Technician1558226795
  10. Emily Nguyen, MDStudent in an Organized Health Care Education/Training Program1033057872
  11. Felicia NguyenBehavior Technician1730071507
  12. Francesco NguyenPharmacist1851035851
  13. Gia NguyenBehavior Technician1033914429
  14. Gina NguyenDentist1356873913
  15. Groyz Nguyen, RPTPhysical Therapist1902065436
  16. Han Nguyen, PHARMDPharmacist1225564388
  17. Hang NguyenBehavior Technician1619688421
  18. Hang NguyenBehavior Technician1063237576
  19. Hannah Nguyen, MDStudent in an Organized Health Care Education/Training Program1629862875
  20. Harold NguyenBehavior Technician1275404162
  21. Harry Nguyen, D.O.Hepatology Physician1003277930
  22. Helen NguyenPharmacist1235518911
  23. Helena NguyenObstetrics & Gynecology Physician1124760079
  24. Hieu Vincent NguyenBehavior Technician1093599755
  25. Hoa NguyenStudent in an Organized Health Care Education/Training Program1982090551
  26. Hoang Nguyen, M.D.Child & Adolescent Psychiatry Physician1841240769
  27. Hoang NguyenClinical Social Worker1871809756
  28. Hoang Anh Nguyen, M.D.Hospitalist Physician1407147440
  29. Hong Nguyen, RPHPharmacist1851700595
  30. Hong-Nhi Nguyen, PAPhysician Assistant1992064703
  31. Huey NguyenBehavior Technician1750109062
  32. Hung Nguyen, D.O.Family Medicine Physician1447284526
  33. Huy NguyenBehavior Technician1639857808
  34. Huyen Anh Nguyen, LCSWClinical Social Worker1518002906
  35. Huynh NguyenBehavior Technician1750037271
  36. Jacqueline NguyenBehavior Technician1881437895
  37. Jacqueline NguyenBehavior Technician1124915442
  38. James Nguyen, M.D.Anesthesiology Physician1679880934
  39. Jane NguyenBehavior Analyst1467037697
  40. Jasmine NguyenBehavior Technician1093403693
  41. Jason NguyenBehavior Technician1023813144
  42. Jason Son Nguyen, DDSGeneral Practice Dentistry1891908521
  43. Jenifer NguyenBehavior Technician1477490605
  44. Jennie NguyenBehavior Technician1346939170
  45. Jennie NguyenBehavior Technician1558167924
  46. Jenny NguyenSocial Worker1366530438
  47. Jenny NguyenBehavior Analyst1326505660
  48. Jenny NguyenStudent in an Organized Health Care Education/Training Program1851150007
  49. Jimmy Nguyen, SLPSpeech-Language Pathologist1306381074
  50. Jimmy Nguyen, NPNurse Practitioner1386590958

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.