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 258 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
- Matthew Wise, M.D.Phlebology Physician1235107038
- Patrick WiseCounselor1487056032
- Jeanne WojslawBehavior Analyst1346809597
- Diane Wolf, M.A.CCCSpeech-Language Pathologist1700080983
- Gregory Wolf, M.D.Family Medicine Physician1881653467
- Ian WolfStudent in an Organized Health Care Education/Training Program1841987690
- Faith WolfeBehavior Technician1235861683
- Michelle Wolff, DPTPhysical Therapist1437536935
- Ram Wolman, MDNeurology Physician1033795679
- Emily Wolverton, MDUrogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1679214043
- Tyler Womack, PHDPsychologist1528841160
- Emily WonBehavior Technician1851132211
- Eugene Won, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1659799658
- Lydia WonBehavior Technician1861181232
- Michelle Won, MDPsychiatry Physician1124760335
- Allan Wong, MDPediatrics Physician1831224450
- Allison Wong, MS, CGCGenetic Counselor (M.S.)1841898574
- Alton WongAnesthesiology Physician1063755874
- Anne B Wong, MDAnesthesiology Physician1285728543
- Barry Wong, PTPhysical Therapist1144423302
- Brandon WongPediatrics Physician1346009644
- Brian Wong, MDOtolaryngology/Facial Plastic Surgery Physician1487748752
- Christina WongAddiction (Substance Use Disorder) Counselor1851110092
- Daphne Wong, MDPediatrics Physician1740291467
- Ethan WongBehavior Technician1538942123
- Gregory Wong, M.D.Pediatric Gastroenterology Physician1386977288
- Jason Wong, MDRadiation Oncology Physician1548426018
- Jason WongAllergy & Immunology Physician1376170449
- Jeffrey Wong, MDPediatric Hospice and Palliative Medicine Physician1316130321
- Jennifer Wong, M.D.Family Medicine Physician1508835786
- Joanne Wong, PHARMDPharmacist1245011501
- Joey Wong, D.O.Geriatric Medicine (Family Medicine) Physician1699126730
- John Wong, MDHematology & Oncology Physician1336436500
- Katherine WongDay Training/Habilitation Specialist1720954019
- Katrina Wong, DPTPhysical Medicine & Rehabilitation Physician1568227692
- Nicholas WongBehavior Analyst1114301488
- Pammie Wong, PHARM.D.Pharmacist1386237196
- Philip Wong, MDInternal Medicine Physician1699729558
- Rachael WongStudent in an Organized Health Care Education/Training Program1215738307
- Ryan Wong, M.D.Plastic Surgery Physician1912101452
- Siu-Fun Wong, PHARM.D.Pharmacist1255336657
- Susan Wong, M.D.Student in an Organized Health Care Education/Training Program1043654551
- Tammy WongSleep Medicine (Family Medicine) Physician1346744414
- Shannon WongvibulsinDermatology Physician1144685447
- Dustin WooPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1972321198
- Daneeka Wood, ASWSocial Worker1699393413
- Justine WoodSocial Worker1629256268
- Katherine Wood, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1689931719
- Samantha WoodBehavior Technician1598535064
- Logan Woodhouse, MDPain Medicine (Anesthesiology) Physician1417450248
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.