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 203 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
- Sheree Riley Violon, PSY.D.Psychologist1063606911
- Nathan RimStudent in an Organized Health Care Education/Training Program1114711470
- Alejandrina Rincon, M.D.Obstetrics & Gynecology Physician1295929909
- Lorraine RineerMental Health Counselor1093353070
- Robb Ring, D.MINPastoral Counselor1528684115
- David Ringdahl, D.C.Chiropractor1689609562
- Timothy Ringgold, MT-BCMusic Therapist1447545538
- Ariana RiosBehavior Technician1770463580
- Christina RiosSocial Worker1114742103
- Eunice RiosMarriage & Family Therapist1700584851
- Gabriel RiosBehavior Technician1104607902
- Hilda RiosBehavior Technician1144119363
- Katherine RiosBehavior Technician1497533939
- Luis Rios MartinezBehavior Technician1558041798
- Mai Tram Riquier, MDEmergency Medicine Physician1174272470
- Elizabeth Ritchie, MAStudent in an Organized Health Care Education/Training Program1588401863
- Tammy RitterMassage Therapist1275961344
- Adam Rivadeneyra, MDSports Medicine (Family Medicine) Physician1689935355
- Azul RivadeneyraOther Technician1790444628
- Alison Rivas, LPTLicensed Psychiatric Technician1245664937
- Daisy RivasBehavior Technician1497320014
- Jasmine RivasBehavior Technician1174409809
- Michelle RivasBehavior Technician1285583302
- Silvia RivasBehavior Technician1083481311
- Alexander RiveraBehavior Technician1902641434
- Alexis RiveraBehavior Technician1619862745
- David RiveraMarriage & Family Therapist1174079925
- David RiveraBehavior Technician1477420339
- Fernando RiveraBehavior Technician1043906795
- Hannah RiveraBehavior Technician1982344933
- Kailajean RiveraOther Technician1043988454
- Kimberly RiveraBehavior Technician1457248783
- Matthew RiveraAthletic Trainer1679960165
- Monica RiveraBehavior Technician1053028696
- Nancy Rivera, RN, CNS, WHNP, DNPWomen's Health Nurse Practitioner1891458766
- Oscar RiveraBehavior Technician1437979440
- Ronald Rivera, M.D.Emergency Medicine Physician1558716233
- Samantha RiveraBehavior Technician1255205340
- Sheralee Rivera, CPHW/CCECase Manager/Care Coordinator1245408376
- Xyleah-Eden RiveraBehavior Technician1962338715
- Patricia Rivera MendozaBehavior Technician1003676107
- Jesus Rivera RamirezDay Training/Habilitation Specialist1558132431
- Cora RiveroSpeech-Language Pathologist1861374142
- Claire RizkCritical Care Pediatric Nurse Practitioner1255816203
- Lilliana RizzoOther Technician1124603030
- Soledad RoaBehavior Technician1265328694
- Leah Roa-GutierrezCase Manager/Care Coordinator1659030229
- Danielle Roach, DCChiropractor1245747419
- Noah RoachBehavior Technician1508551201
- Paige RoachDevelopmental Therapist1962806240
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.