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 171 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. Lilliana NguyenPharmacist1205716081
  2. Lily NguyenStudent in an Organized Health Care Education/Training Program1760003552
  3. Lindsay Nguyen, BCBABehavior Analyst1669867875
  4. Linh NguyenPediatric Nurse Practitioner1487151346
  5. Lisa Nguyen, DOAnesthesiology Physician1902395213
  6. Loc NguyenBehavior Technician1710445440
  7. Loc NguyenBehavior Technician1316796568
  8. Loc-Jeffrey Nguyen, PHARMDPharmacist1326623224
  9. Lyna Nguyen, RNRegistered Nurse1407209513
  10. Lynn NguyenBehavior Technician1164388443
  11. Madilyn NguyenCommunity Health Worker1871314328
  12. Man NguyenBehavior Technician1144040254
  13. Maria Nguyen, DOPediatrics Physician1053113548
  14. Marijane Nguyen, LCSWClinical Social Worker1396332102
  15. Mark Nguyen, D.D.S.General Practice Dentistry1295941755
  16. Mark NguyenBehavior Technician1760269955
  17. Martin NguyenDentist1962048033
  18. Max NguyenMental Health Counselor1205097334
  19. Megan Nguyen, PA-CPhysician Assistant1952273773
  20. Meika NguyenBehavior Technician1760175392
  21. Michelle Nguyen, LCSWClinical Social Worker1114176781
  22. Michelle Nguyen, PHARM. D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1497033070
  23. Michelle Nguyen, MDEmergency Medicine Physician1407367618
  24. Michelle Nguyen, NPRegistered Nurse1225642903
  25. Michelle NguyenNeurology Physician1043896715
  26. Michelle NguyenBehavior Technician1942046693
  27. Michelle NguyenStudent in an Organized Health Care Education/Training Program1013703545
  28. Mimi NguyenBehavior Technician1033924949
  29. Minh Tee NguyenBehavior Technician1558831230
  30. My Phuong Pham Nguyen, N.P.Family Nurse Practitioner1104218494
  31. Nam NguyenPharmacist1053693556
  32. Nam Phuong NguyenStudent in an Organized Health Care Education/Training Program1134061740
  33. Nga My Nguyen, PHARM.DPharmacist1154264976
  34. Ngan NguyenBehavior Technician1427517093
  35. Ngoc Mai NguyenBehavior Technician1720781917
  36. Nhi NguyenBehavior Technician1346927399
  37. Nhi NguyenBehavior Technician1851172498
  38. Nhi NguyenBehavior Technician1003786732
  39. Nhung Nguyen, M.S.WClinical Social Worker1295900082
  40. Nikki NguyenPsychiatry Physician1487282455
  41. Nikki Nhu Nguyen, MDStudent in an Organized Health Care Education/Training Program1386148781
  42. Nina NguyenBehavior Technician1508643701
  43. Ninh Nguyen, MDSurgery Physician1487734653
  44. Peter Nguyen, MDHospitalist Physician1407483787
  45. Peter NguyenStudent in an Organized Health Care Education/Training Program1346981644
  46. Phan NguyenAssistant Behavior Analyst1164122362
  47. Phi NguyenBehavior Technician1083244214
  48. Phu NguyenPharmacist1649652017
  49. Quan NguyenBehavior Technician1578200531
  50. Quang NguyenBehavior Technician1790521466

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.