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 46 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. Kevin Chow, MDHospitalist Physician1396240206
  2. Lillian Chow, MDCritical Care Medicine (Internal Medicine) Physician1972778520
  3. Tom Chow, PA-CPhysician Assistant1003803115
  4. Warren Chow, MDHematology & Oncology Physician1093822017
  5. Wayne Chow, PHARM DPharmacist1407935448
  6. Yuk ChowBehavior Technician1821672452
  7. Sonal Chowdhry, PSYD.Clinical Psychologist1699192344
  8. Krishna Chowdhury, NPFamily Nurse Practitioner1912251307
  9. Raushni ChowdhuryBehavior Technician1295520856
  10. Tricia Choy, PH.D.Psychologist1407550007
  11. Vanessa Chrisman, RDPediatric Nutrition Registered Dietitian1750103982
  12. Alexandra ChristensenBehavior Technician1265308704
  13. Cassidy ChristensenBehavior Technician1023989811
  14. Cynthia ChristensenDay Training/Habilitation Specialist1316791825
  15. Leah ChristensenBehavior Technician1548039910
  16. Maximilian ChristensenBehavior Technician1316506223
  17. Mary Christian, M.A., R.D., C.D.E.Registered Dietitian1710104021
  18. Sonet Christian, FNP-BCFamily Nurse Practitioner1649959131
  19. John Christopher, DOStudent in an Organized Health Care Education/Training Program1982405254
  20. Timothy ChristyBehavior Technician1073211454
  21. Clara Chu, MDAnesthesiology Physician1083295398
  22. Eleanor Chu, M.D.Neuroradiology Physician1043536972
  23. Elizabeth ChuBehavior Technician1184348708
  24. Esther ChuPharmacist1104768951
  25. James Chu, M.D.Pediatric Cardiology Physician1346216009
  26. Joanna ChuBehavior Technician1225904972
  27. Michael Chu, M.D.Child & Adolescent Psychiatry Physician1154783348
  28. Mollee Chu, MDStudent in an Organized Health Care Education/Training Program1801546932
  29. Paul Chu, D.D.SPeriodontics1922213750
  30. Victor Chu, DDSGeneral Practice Dentistry1275732760
  31. Yi Cheng Chu, M.D.Student in an Organized Health Care Education/Training Program1598494254
  32. Frederick Chua, M.D.Hospitalist Physician1477180701
  33. Jessica Chuang, M.D.Occupational Medicine Physician1861802613
  34. Kai-Wen Chuang, M.D.Pediatric Urology Physician1851529242
  35. Sharrow Chuang, DDSDentist1659970861
  36. Ifeanacho ChubaAssistant Behavior Analyst1194524017
  37. Vadim Chudnovsky, M.D.Diagnostic Radiology Physician1922049394
  38. Daniel Chueh, M.D.Psychiatry Physician1174589642
  39. Angel ChuiBehavior Technician1972206167
  40. Luis Chui, M.DNeuromusculoskeletal Medicine & OMM Physician1134210842
  41. Anastasia Chumakova, MDNeurology Physician1881155638
  42. Ethan ChunBehavior Technician1144079393
  43. Kevin Chun, MDPsychiatry Physician1053773028
  44. Anupama Chundu, MDPediatrics Physician1699181404
  45. Brian Chung, MDAnesthesiology Physician1063907202
  46. Claire ChungBehavior Technician1144004722
  47. Eliott ChungStudent in an Organized Health Care Education/Training Program1144015413
  48. Hugh ChungSurgery Physician1639309156
  49. Jessica ChungBehavior Technician1902526957
  50. Joyce Chung, MSN, AGACNP-BCAcute Care Nurse Practitioner1851944821

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.