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 154 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. Margarita Mendoza, LVNLicensed Vocational Nurse1801713128
  2. Melissa MendozaLicensed Vocational Nurse1386511277
  3. Nathan MendozaBehavior Technician1821911165
  4. Paul MendozaBehavior Technician1023979028
  5. Rosemarie Mendoza, NPNurse Practitioner1669529665
  6. Samantha MendozaBehavior Technician1871416123
  7. Susan Mendoza, MSSpeech-Language Pathologist1205158235
  8. Vanessa MendozaPhysician Assistant1154029098
  9. Veronika Mendoza, LPCC, LEPMental Health Counselor1114545670
  10. Abelardo Mendoza Franco, BACHELOR OF ARTSSpeech-Language Pathologist1598308934
  11. Daisy Mendoza LopezBehavior Technician1073307625
  12. Stuart Mendoza NolascoMental Health Counselor1922978659
  13. Estefanny Mendoza SoriaBehavior Technician1558078725
  14. Daisy Mendoza-Flores, RNRegistered Nurse1013459262
  15. Raphael MenezBehavior Technician1265172423
  16. Kimberly Menezes, MDOphthalmology Physician1386384485
  17. Kenneth Meng, M.D.Diagnostic Radiology Physician1134443211
  18. Miah MenjivarBehavior Technician1518823368
  19. Daniella MenoyaBehavior Technician1518646694
  20. Ana MercadoBehavior Technician1083555809
  21. Aprelle MercadoBehavior Technician1760297717
  22. Daisy MercadoBehavior Technician1013792837
  23. Nicole MercadoBehavior Technician1073296661
  24. Edna Sophia Mercorios, PSY.D.Clinical Psychologist1467593087
  25. James Mergelmeyer, DDSStudent in an Organized Health Care Education/Training Program1386005098
  26. Andrea MeridaBehavior Technician1518883859
  27. Rosa MeridaBehavior Technician1659139673
  28. David Merin, MDEmergency Medicine Physician1811929979
  29. Esmeralda MerinoBehavior Technician1760135396
  30. Sandra Merino, PHARMD, BCPPSPharmacist1073373890
  31. Amando Merino Martinez, NONEBehavior Technician1578222105
  32. Alyssa MerittBehavior Technician1104688118
  33. Caren Merrill, MPHGenetic Counselor (M.S.)1871623942
  34. Holly MerrillMarriage & Family Therapist1326542051
  35. Kamryn MerrillBehavior Analyst1508610007
  36. Kaylie MerrillBehavior Technician1508400045
  37. Star MerrillBehavior Technician1124987029
  38. David MerriottOphthalmology Physician1588242606
  39. Patricia Merten, PT, DPTPhysical Therapist1215498084
  40. Eric Mervis, M.DEmergency Medicine Physician1316178361
  41. Heather Mesa, MDStudent in an Organized Health Care Education/Training Program1598566739
  42. Alister Meshkin, MDAnesthesiology Physician1710481130
  43. Dana MeshkinStudent in an Organized Health Care Education/Training Program1467206946
  44. Hannah MessickBehavior Technician1063981041
  45. Lauren MessierBehavior Technician1871374512
  46. Jouly MessihaBehavior Technician1770448292
  47. Renee Mestanza-Esquer, C.N.P.Women's Health Nurse Practitioner1225082142
  48. Christopher MestyanekStudent in an Organized Health Care Education/Training Program1487304259
  49. McKenna MetcalfBehavior Analyst1194383117
  50. Elena Metchikoff, R.D.Registered Dietitian1083994818

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.