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 265 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. Xiaohui S Zhao, MDAnatomic Pathology & Clinical Pathology Physician1073608154
  2. Dennis Zheng, MDTrauma Surgery Physician1699271213
  3. Emily Zheng, MD, DDSDiagnostic Radiology Physician1598230161
  4. Anni ZhongSocial Worker1316510084
  5. Elaine Zhou, MDStudent in an Organized Health Care Education/Training Program1497693634
  6. Helen ZhouPediatrics Physician1477973139
  7. Sarah ZhouStudent in an Organized Health Care Education/Training Program1285336685
  8. Xuefei ZhouBehavior Technician1851153035
  9. Catherine Zhu, M.D.Colon & Rectal Surgery Physician1457705683
  10. Christina Zhu, MDStudent in an Organized Health Care Education/Training Program1982406989
  11. Ema ZhuBehavior Technician1922978949
  12. Lily Zhu, DOStudent in an Organized Health Care Education/Training Program1891444188
  13. Toby Zhu, MDStudent in an Organized Health Care Education/Training Program1164281895
  14. Yan ZhuCertified Registered Nurse Anesthetist1457152639
  15. Muhammad Zia, MDPsychiatry Physician1497851844
  16. Tuba ZiaBehavior Technician1942033568
  17. Amin Ziaei, MD, PHDStudent in an Organized Health Care Education/Training Program1700580230
  18. Zoe Ziegler, PAPhysician Assistant1881156107
  19. Tamima ZiemerBehavior Technician1972062461
  20. Cilla Ziemlanski, MSW, LCSWSocial Worker1851914840
  21. Paul Ziesmer, MDEmergency Medicine Physician1649202714
  22. Hillary Zieve, M.D.Pediatrics Physician1831500131
  23. Amanda Zintsmaster, PSY.D.Clinical Psychologist1396101895
  24. Ronen Zipkin, M.D.Pediatrics Physician1265556765
  25. Michael ZippwaldMarriage & Family Therapist1225593957
  26. Chadbourne ZitekStudent in an Organized Health Care Education/Training Program1326894692
  27. Shelby ZittercobBehavior Technician1427843481
  28. Zoey Zoerner, PA-CMedical Physician Assistant1932920246
  29. Gary Zohman, MDOrthopaedic Surgery Physician1396814000
  30. Anna Zolyan, MDNeurology Physician1467913178
  31. Farideh Zonouzi, PHARM.DPharmacist1912371873
  32. Nadia Zuabi, MDEmergency Medicine Physician1639639933
  33. Avital ZuckerStudent in an Organized Health Care Education/Training Program1346937679
  34. Nadia Zuhdi, BCBABehavior Analyst1821620717
  35. Juan Zuluaga, MSProfessional Counselor1972068641
  36. Aidan ZunigaBehavior Technician1174398275
  37. Ariel ZunigaMental Health Counselor1366135014
  38. Christian ZunigaBehavior Technician1386477578
  39. Eric Zuniga, MDCardiovascular Disease Physician1821558594
  40. Isabella ZunigaBehavior Technician1508698457
  41. Jesus ZunigaBehavior Technician1225758071
  42. Karla ZunigaBehavior Technician1801353545
  43. Kyra ZunigaBehavior Technician1528871290
  44. Blanca Zuniga ArteagaBehavior Technician1215644844
  45. Tamar Zwick, PAMedical Physician Assistant1477068765

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.