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 189 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. Miles Pfaff, MDPlastic Surgery Physician1265852388
  2. Charles Pfeiffer, NP-CFamily Nurse Practitioner1932668100
  3. Matthew Pfeiffer, DPTPhysical Therapist1275991192
  4. Anh PhamBehavior Technician1710627765
  5. Anthony Pham, M.D.Hospitalist Physician1326068990
  6. Celine PhamBehavior Technician1316875206
  7. Christine Pham, R.D.Registered Dietitian1649971870
  8. Christopher Pham, MDEndocrinology, Diabetes & Metabolism Physician1730769928
  9. Cindy PhamBehavior Technician1235841099
  10. Dang PhamBehavior Technician1932855541
  11. Daniel Pham, FNP-CPrimary Care Nurse Practitioner1588250690
  12. Danny Pham, PHARMDPharmacist1326705872
  13. David PhamOther Technician1003582727
  14. Derik Pham, DMDDentist1326658519
  15. Eric Pham, MDSurgery Physician1124055041
  16. Eric PhamBehavior Technician1003761438
  17. Francine PhamOther Technician1427624113
  18. Hanh Pham, DONeurology with Special Qualifications in Child Neurology Physician1356143218
  19. Hao PhamBehavior Technician1558125047
  20. Helen PhamBehavior Technician1205640430
  21. Hieu PhamBehavior Technician1679405914
  22. Huy Pham, PHARMDPharmacist1003763038
  23. Jacqueline Pham, PHARM.D.Pharmacist1508263187
  24. Jennifer PhamBehavior Technician1386370229
  25. Jenny PhamBehavior Technician1093522179
  26. Jillian PhamBehavior Technician1780368860
  27. John PhamBehavior Technician1679335681
  28. Johnson PhamBehavior Technician1487344826
  29. Joseph PhamBehavior Technician1184550261
  30. Juliemai PhamMental Health Counselor1336529460
  31. Kalynn PhamBehavior Technician1306593876
  32. Kathleen Pham, MDVascular & Interventional Radiology Physician1396249850
  33. Kevin Pham, M.D.Nephrology Physician1477623635
  34. Kevin Pham, DONeuroradiology Physician1811524911
  35. Kevin Pham, NPPsychiatric/Mental Health Nurse Practitioner1356131288
  36. Kevin PhamBehavior Technician1083565071
  37. Kim Pham, FNPNurse Practitioner1619622446
  38. Lena PhamOther Technician1881285450
  39. Linh Pham, MDPediatrics Physician1972683118
  40. Lisa Pham, NPAcute Care Nurse Practitioner1609591676
  41. Luyen Pham, MA MFTMarriage & Family Therapist1386898732
  42. Madalyn PhamBehavior Technician1487537742
  43. Meghan PhamBehavior Technician1558190868
  44. Mychelle Pham, M.D.Pediatrics Physician1770679508
  45. Nghia Pham, MDStudent in an Organized Health Care Education/Training Program1386207934
  46. Ngocdiep Pham, NPNurse Practitioner1396952974
  47. Nguyen PhamBehavior Technician1891532149
  48. Nguyen Tuong Vy PhamBehavior Technician1568156115
  49. Peter Pham, M.D.Diagnostic Radiology Physician1972600237
  50. Peter Pham, NPPsychiatric/Mental Health Nurse Practitioner1366908543

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.