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 102 of 265.
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
- Tara Holguin, PHYSICIAN ASSISTANTPhysician Assistant1417491721
- Breonna HolifieldBehavior Technician1881387850
- Devin HollarBehavior Technician1912707332
- Lila HolleyBehavior Technician1992658298
- Christine Hollister, MDAnesthesiology Physician1649350703
- George Holman, MDGastroenterology Physician1447486436
- Scott Holman, P.T.Physical Therapist1952431306
- Ryan HolmenBehavior Technician1477487825
- Samantha HolmesBehavior Technician1952053274
- Whitney HolmesLicensed Psychiatric Technician1659711752
- William Holmes, M.D.Diagnostic Radiology Physician1700811700
- Elise Holsey, ASWClinical Social Worker1063873586
- Matthew Holve, M.D.Psychiatry Physician1326279720
- Tina Marie HolzingerAddiction (Substance Use Disorder) Counselor1629549753
- Christy Hom, PH.D.Clinical Child & Adolescent Psychologist1124200811
- Steve Hom, M.D.Diagnostic Radiology Physician1841489341
- Nazafarin Honarpisheh, MD, BCBABehavior Analyst1932660388
- Patrick Honeycutt, MDGeneral Practice Physician1952966012
- Allison HongAudiologist1861040511
- Amanda Hong, PA-CMedical Physician Assistant1841841079
- Chang-Zern Hong, M.D.Pain Medicine (Physical Medicine & Rehabilitation) Physician1043389471
- Chi HongBehavior Technician1588505390
- Duy HongBehavior Technician1932974037
- Emily HongBehavior Technician1043840739
- Esther Hong, PH.D.Clinical Psychologist1447954797
- Hanna Hong, M.D.Pediatric Sleep Medicine Physician1023364692
- James Hong, MDPediatrics Physician1881495117
- John HongStudent in an Organized Health Care Education/Training Program1750229928
- Joy HongBehavior Technician1164271177
- Justin Hong, D.D.S.Orthodontics and Dentofacial Orthopedics Dentistry1619056736
- Robin Hong, PAPhysician Assistant1215563796
- Ruth HongBehavior Technician1619651718
- Sarah Hong, AU.D.Audiologist1669947156
- Sarah HongMental Health Counselor1861212094
- Seogeun HongInternal Medicine Physician1871927962
- Sungmo HongStudent in an Organized Health Care Education/Training Program1811887425
- Robin Hong-Routledge, PSY.D.Clinical Psychologist1811205222
- Wirachin Hoonpongsimanont, MDEmergency Medicine Physician1033429253
- Randy HopeMental Health Counselor1083139059
- Amy HopkinsMental Health Counselor1023422854
- Hannah HopkinsBehavior Technician1144150442
- Kelly Hopkins, CRNACertified Registered Nurse Anesthetist1407898661
- Fallyn HoranBehavior Technician1922982263
- Mary Beth Horn, M.A., LMFTMarriage & Family Therapist1922670124
- Jason Horowitz, MDOrthopaedic Surgery of the Spine Physician1801418926
- Rafael HortaCommunity Health Worker1922814334
- Kelsey HortonBehavior Technician1154054872
- Lauren Horvath, M.A., LMFT # 101190Marriage & Family Therapist1093077554
- Lori Horwitz, LCSWClinical Social Worker1811088461
- Hailey HosilykBehavior Technician1407672090
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
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.