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 100 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. Zahra Heydari DayeniMarriage & Family Therapist1942331921
  2. John A Heydt, MDFamily Medicine Physician1750461810
  3. Eric Heyer, MDPain Medicine (Anesthesiology) Physician1619903887
  4. Catherine Heyrosa, RN, CDCESDiabetes Educator Registered Nurse1548067184
  5. Frederick HickmanBehavior Technician1154266989
  6. Anna HicksSpeech-Language Pathologist1063848182
  7. David Hicks, M.D.Pediatric Pulmonology Physician1851485627
  8. Rebecca Hicks, M.D.Pediatric Endocrinology Physician1720258379
  9. Timothy Hicks, M.D.Pediatric Pulmonology Physician1386006823
  10. Vanessa HicksBehavior Technician1902793227
  11. Cecelia Hidalgo, MDStudent in an Organized Health Care Education/Training Program1912842733
  12. Elizabeth HidalgoDentist1154572535
  13. Elsie Rosso Hidalgo, MDPediatrics Physician1487734547
  14. Patricia HidalgoBehavior Technician1891590972
  15. Guy Hidas, MDPediatrics Physician1336443001
  16. Isabella HidrogoBehavior Technician1457204752
  17. Alan HifkoAnesthesiology Physician1225533722
  18. Genesis HigaredaBehavior Technician1063279644
  19. Angela Higgins, MSN,APRN, NP-C, RNFARegistered Nurse First Assistant1235270398
  20. Jnai HigginsMental Health Counselor1891367116
  21. Dakota Hightower-MillerBehavior Technician1164371365
  22. Kathryn HigleSpeech-Language Pathologist1710818158
  23. Ron Higuera, D.C.Rehabilitation Chiropractor1326133679
  24. Firas HikmatStudent in an Organized Health Care Education/Training Program1376346890
  25. Paula Hilbert, R,N.Registered Nurse1386784510
  26. Kate HildahlStudent in an Organized Health Care Education/Training Program1548020449
  27. Janett Hildebrand, NPFamily Nurse Practitioner1861585143
  28. Kayla HillBehavior Technician1184506545
  29. Melisa Hill, RN, MSN, CPNPPediatric Nurse Practitioner1114196425
  30. Stephanie Hill, LCSWClinical Social Worker1043589351
  31. Valerie Hill, NPFamily Nurse Practitioner1255971552
  32. Susan Hill-Taylor, DDSDentist1770867830
  33. Brooke HilliardBehavior Technician1750262218
  34. Joshua HillsMental Health Counselor1689008849
  35. Robert Hillyard, M.D.Neonatal-Perinatal Medicine Physician1073607842
  36. Jennifer Hillyer, NPNurse Practitioner1154403335
  37. Yolanda Hilton, LPTLicensed Psychiatric Technician1154528974
  38. Alexander Himstead, MDStudent in an Organized Health Care Education/Training Program1578213088
  39. Eric HinesPlastic and Reconstructive Surgery Physician1952938763
  40. Jesus Hines BrownBehavior Technician1023950128
  41. Audrey HinhOther Technician1932734522
  42. Marcelo Hinojosa, MDSurgery Physician1861673998
  43. Lissette HinzmannBehavior Technician1790342806
  44. Fuki Hisama, MDClinical Genetics (M.D.) Physician1780666420
  45. Andrea Hise, ATCAthletic Trainer1720433956
  46. Kate HizonSpeech-Language Assistant1073487476
  47. Cathleen Hjorth, RN, BSN, MSG, RNFARegistered Nurse First Assistant1801084991
  48. Anthony Ho, MD, MSEStudent in an Organized Health Care Education/Training Program1992643241
  49. Clara HoBehavior Technician1841928538
  50. David Ho, DOStudent in an Organized Health Care Education/Training Program1588314116

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.