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 143 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 Magana Resendez, MSWSocial Worker1164313144
  2. Christine MagdalenoOrthopaedic Surgery Physician1366376246
  3. Lauren Magdaleno, PA-CPhysician Assistant1497494348
  4. Vivianna MagdalenoBehavior Technician1447103478
  5. Yessika MagdalenoBehavior Technician1255276978
  6. Keara MageeBehavior Technician1306654686
  7. Marilyn MagenoDay Training/Habilitation Specialist1295600641
  8. Victor Magin, BCBABehavior Analyst1376101295
  9. William Maginnis, DDSDentist1760649347
  10. Marlene Magistrado, MOT, OTR/LOccupational Therapist1992044739
  11. Courtney MaglebyBehavior Technician1992319834
  12. Nika Magnani-ConvertinoStudent in an Organized Health Care Education/Training Program1346188638
  13. Brooke MagnessBehavior Technician1700581675
  14. Angela MagpantayBehavior Technician1962363341
  15. Oliver MagsakayBehavior Technician1659014579
  16. Katelyn Magsino, NPPsychiatric/Mental Health Nurse Practitioner1730845579
  17. Fides May MagtotoAcute Care Nurse Practitioner1508646837
  18. Arash Mahajerin, M.D.Pediatric Hematology & Oncology Physician1033315247
  19. Mithila MahaleStudent in an Organized Health Care Education/Training Program1376425876
  20. Roza Mahdiyar, MDPediatrics Physician1447382155
  21. Justine Maher, MD, MPHStudent in an Organized Health Care Education/Training Program1477136794
  22. Terrence Maher, LCSWClinical Social Worker1669554143
  23. Bassel MahfoudClinical Neurophysiology Physician1578199402
  24. Aafreen Mahmood, MDPsychiatry Physician1306540653
  25. Tariq Mahmood, M.D.Hematology & Oncology Physician1104874171
  26. Dema MahmoudBehavior Technician1376357384
  27. Eugene L Mahmoud, MDNeonatal-Perinatal Medicine Physician1962582122
  28. Samaan Mahmoudzadeh, MDStudent in an Organized Health Care Education/Training Program1295476489
  29. Donald Mahon, M.D.Cardiovascular Disease Physician1255335659
  30. Roshan Mahoney, DOHospitalist Physician1629539226
  31. Ryan Mahoney, MSGenetic Counselor (M.S.)1851083984
  32. Rana MahrousPharmacist1508755919
  33. Ali Mahtabifard, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1801872593
  34. Andrew Mai, MDAnesthesiology Physician1952782781
  35. Daniel Mai, MDStudent in an Organized Health Care Education/Training Program1639939499
  36. Jennifer MaiMental Health Counselor1073213823
  37. Katherine Mai, MDPediatric Nephrology Physician1083118905
  38. Xuyen MaiPharmacist1255197026
  39. Angela Maietta, MPHNutrition Education Nutritionist1356428551
  40. Ava MailhiotBehavior Technician1215860408
  41. Judy MainaMedical-Surgical Registered Nurse1386443174
  42. Joseph MaioranaPeer Specialist1841791050
  43. Brenton MaiselStudent in an Organized Health Care Education/Training Program1558010355
  44. Shirin Majdizadeh, M.D.Internal Medicine Physician1700135126
  45. Carol Major, MDMaternal & Fetal Medicine Physician1285676148
  46. David Majors, MDPhysical Medicine & Rehabilitation Physician1619157658
  47. Aditi MajumdarSports Medicine (Orthopaedic Surgery) Physician1144608381
  48. Moliane MakaafiBehavior Technician1104589191
  49. Natalie Makardish, MA, RYTMental Health Counselor1023602596
  50. Niki Maki, MDNeurology Physician1972124170

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.