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 103 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. Amber HoskinsRehabilitation Practitioner1356990865
  2. Fariba Hossain, MDStudent in an Organized Health Care Education/Training Program1154260321
  3. Maryam Hosseini Farahabadi, M.D., M.S.Student in an Organized Health Care Education/Training Program1114381753
  4. Brian Hotchkiss, MMT, MT-BCMusic Therapist1790404754
  5. Jasmine HouOther Technician1922774645
  6. Lily Hou, M.D.Anesthesiology Physician1053332619
  7. Kay HoughMental Health Counselor1306943105
  8. Michelle HoughStudent in an Organized Health Care Education/Training Program1376120337
  9. Chase HoughtBehavior Analyst1225506314
  10. Michelle Hour, LCSWClinical Social Worker1164051207
  11. Catherine House, NONEBehavior Technician1629722194
  12. Allen Houshiar, DO, MSFamily Medicine Physician1427076272
  13. Roozbeh Houshyar, M.D.Body Imaging Physician1619141413
  14. Kennedy HoutsBehavior Technician1205655172
  15. Christos Howard, MDFamily Medicine Physician1437140811
  16. Keith Howard, PH.D.Clinical Psychologist1558373506
  17. Laura Howard, M.D.Ophthalmology Physician1194934109
  18. Leighton HowardBehavior Technician1205419280
  19. Kerry HoweBehavior Technician1730866781
  20. Hope HowellBehavior Technician1801724794
  21. Maya HowellBehavior Technician1336095991
  22. Stacey HowellClinical Cardiac Electrophysiology Physician1609290774
  23. Bruce Hoyle, M.D.Sports Medicine (Family Medicine) Physician1225184518
  24. Brandi HoytBehavior Technician1609434646
  25. Anthony HrebienBehavior Analyst1073072583
  26. Thomas Hryniewicki, M.D.Internal Medicine Physician1992807341
  27. Ryan Hsi, M.D.Urology Physician1043451073
  28. Joseph Hsiao, MDEndocrinology, Diabetes & Metabolism Physician1699139287
  29. Charlie Hsieh, DDSDentist1417080284
  30. Lanny Hsieh, MDHospitalist Physician1184828444
  31. Loan HsiehPediatrics Physician1770774341
  32. Peter Hsiue, M.D.Adult Reconstructive Orthopaedic Surgery Physician1679935944
  33. Amy Hsu, PHARMDPharmacist1952014615
  34. Andrew Hsu, MDOrthopaedic Foot and Ankle Surgery Physician1497983761
  35. Chaoliang HsuBehavior Technician1487497749
  36. Chia Wei HsuNeuro-ophthalmology Physician1811638471
  37. Edmund Hsu, MDEmergency Medicine Physician1780188136
  38. Frank Hsu, M.D.Neurological Surgery Physician1548298417
  39. Jessica Hsu, M.D.Dermatology Physician1841510823
  40. Kang Hsu, M.D.Hospitalist Physician1184693285
  41. Karen Hsu, MDObstetrics & Gynecology Physician1659733459
  42. Ray Hsu, M.D.Pediatrics Physician1972807428
  43. Sheree Hsu, M.D.Anesthesiology Physician1265499032
  44. Vanessa Hsu, O.D.Corneal and Contact Management Optometrist1043281934
  45. Victor Hsu, M.D.Infectious Disease Physician1609889484
  46. Yio-Fan Hsu, M.D.Internal Medicine Physician1588989529
  47. Amanda HuAnesthesiology Physician1104208388
  48. Amy HuBehavior Technician1376466623
  49. Christina Hu, MDStudent in an Organized Health Care Education/Training Program1518805738
  50. Cindy Hu, MDPediatrics Physician1134988595

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.