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 237 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
- Jessica ThorntonClinical Social Worker1679968275
- Darshak Thosani, MDSurgery Physician1801389341
- Jyotsna Thota, MDPediatrics Physician1376162321
- Lauri Thrupp, MDInfectious Disease Physician1366614216
- Yee Mon ThuBehavior Technician1114724499
- Erin ThurstonFamily Medicine Physician1033571153
- Naomi TiaBehavior Technician1114806411
- Natalie Tia, RDRenal Nutrition Registered Dietitian1760535033
- Michael Tian, MDStudent in an Organized Health Care Education/Training Program1700646270
- Sedra TibiStudent in an Organized Health Care Education/Training Program1851192728
- Alyssa TidwellBehavior Technician1386322782
- Taylor Tidwell, MDStudent in an Organized Health Care Education/Training Program1013603588
- Michelle Tiem, MDStudent in an Organized Health Care Education/Training Program1972009561
- David TienPeer Specialist1699238444
- Stacey Tien, P.A. - CVascular Surgery Physician1770583056
- Olivia TiffanyClinical Child & Adolescent Psychologist1578172946
- Erika TijerinaBehavior Technician1336115278
- Makayla TijerinaBehavior Technician1730002973
- Kalin TilburyBehavior Analyst1710445937
- Anne TilfordPeer Specialist1841021615
- James Till, PHD.Speech-Language Pathologist1710068663
- Connie Tillmans, ATCAthletic Trainer1255573994
- Lilyan TilmanBehavior Technician1578380101
- Regina Faith Timbang, DCChiropractor1316407380
- Joann Timberlake, PAEmergency Medicine Physician1043241094
- Leandra TimmeringRegistered Nurse1649121518
- Joseph Tingen, MD, MPHStudent in an Organized Health Care Education/Training Program1720966286
- Randolph Tingle, DOInternal Medicine Physician1326508854
- Vila Tinlin, M.A. & P.P.SSchool Counselor1699613190
- Elena TinocoBehavior Technician1053021006
- Farnoosh Tinoosh, M.D.Ophthalmology Physician1386796209
- David Tio, MDNeonatal-Perinatal Medicine Physician1376632463
- Ekaterina Tiourin, M.D.Student in an Organized Health Care Education/Training Program1235715681
- Jennifer Tipan, M.A.,Professional Counselor1861889404
- Olivia Tirado, PASurgical Physician Assistant1962703504
- Pornchai Tirakitsoontorn, M.D.Pediatric Pulmonology Physician1427085810
- Kimberly TiscarenoOther Technician1881286672
- Joseph Tison, M.D.Diagnostic Radiology Physician1952300592
- Bryan-Clement Tiu, MPHStudent in an Organized Health Care Education/Training Program1821897323
- Tjoson Tjoa, M.D.Otolaryngology Physician1235450958
- Felix Tlalmanalco ArizBehavior Technician1013628817
- David To, DDSDentist1962520908
- Justin To, LMFTMarriage & Family Therapist1053705905
- Lily To, PHARMDPharmacist1861372641
- Michelle ToBehavior Technician1831884311
- Edna Tobias MirandaBehavior Technician1255148359
- Debbie Tobin, R.N.P.Obstetrics & Gynecology Nurse Practitioner1467662304
- Guadalupe TochihuitlBehavior Technician1689420911
- Christopher TockPhysical Therapy Assistant1700082567
- Dean Todd, MDPediatrics Physician1053673392
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.