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 43 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. Natalie Chen, MDStudent in an Organized Health Care Education/Training Program1245757442
  2. Neil ChenPhysician Assistant1710615398
  3. Oscar Chen, MD, MSOphthalmology Physician1598329989
  4. Samantha Chen, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1346669207
  5. Samuel Chen, M.D.Vascular Surgery Physician1164786521
  6. Shiu-Yi Chen, M.D.Pediatric Anesthesiology Physician1437295599
  7. Tianyu Chen, MDInternal Medicine Physician1164927463
  8. Timothy Chen, M.DOphthalmology Physician1821617259
  9. Tino Chen, M.D.Anesthesiology Physician1285655910
  10. Vivian Chen, MDStudent in an Organized Health Care Education/Training Program1639874860
  11. Yuechang ChenBehavior Technician1619751211
  12. Zhengyu ChenBehavior Technician1821970617
  13. Bridget Chen Carboni, M.D.Student in an Organized Health Care Education/Training Program1356751390
  14. Amanda ChengPediatrics Physician1326808049
  15. Andy ChengRegistered Nurse1780476739
  16. Angeline ChengPhysician Assistant1407641442
  17. Brian ChengBehavior Technician1285317891
  18. Eming Cheng, NONEBehavior Technician1558005066
  19. Eugene Cheng, DPMPodiatrist1568990455
  20. Frank Cheng, PT, DPTPhysical Therapist1215639505
  21. Geoffrey Cheng, MDPediatric Hematology & Oncology Physician1003307687
  22. Jerry ChengBehavior Technician1881553758
  23. Judy Cheng, MDPediatrics Physician1295867075
  24. Katie Cheng, RDRegistered Dietitian1932805504
  25. Margaret Cheng, PHARM.DPharmacist1124992813
  26. Melissa Cheng, DDSDentist1083805568
  27. Michael Cheng, DORheumatology Physician1003109513
  28. Nan Cheng, MDNeurology Physician1235795774
  29. Rebecca ChengStudent in an Organized Health Care Education/Training Program1225449010
  30. Timmy Cheng, M.D.Critical Care Medicine (Internal Medicine) Physician1295078764
  31. James Cheon, MDAnesthesiology Physician1457640740
  32. Anthony Cherin, M.D.Pediatric Critical Care Medicine Physician1831283837
  33. Anna ChermontPsychologist1780265199
  34. David CherryMental Health Counselor1720268600
  35. Elizabeth CherryPhysical Therapist1952688475
  36. Chantalle CheungMarriage & Family Therapist1174288278
  37. Elaine Cheung, MDStudent in an Organized Health Care Education/Training Program1609635978
  38. Shin Yu Celia CheungPediatrics Physician1093391799
  39. Stephanie Cheung, MDNephrology Physician1417136219
  40. Tammy Chew, MDFamily Medicine Physician1235584863
  41. Ronald Chez, MDMaternal & Fetal Medicine Physician1457683195
  42. Priyanka Chhadva, M.D.Ophthalmology Physician1700249554
  43. Niharika ChhayaBehavior Technician1205644127
  44. Mary ChhuonBehavior Technician1346193141
  45. Lynn Chi, MDAnesthesiology Physician1053999755
  46. Ting Hsuan Chiang, MDStudent in an Organized Health Care Education/Training Program1013612084
  47. Ruth Chiang Kao, M.D.Pediatrics Physician1821383464
  48. Sadie Chichakly, CPNPPrimary Care Nurse Practitioner1336680404
  49. Zanetta Chichester, ACSWClinical Social Worker1689295172
  50. Angela ChiehStudent in an Organized Health Care Education/Training Program1487356077

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.