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 61 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
- Madison DiminoBehavior Technician1376227298
- Andrew DingAnesthesiology Physician1093201170
- Stephanie DingPharmacist1891577201
- Nikolas DingcongBehavior Technician1780140996
- Lisa Dinglasan, MSW, MPA, LCSW, ACMClinical Social Worker1679897342
- Bill DinhBehavior Technician1215886429
- Claire Dinh, M.A., BCBABehavior Analyst1508254913
- Derrick DinhBehavior Technician1457168346
- Hiep Dinh, MD,DO ETCOptician1417199183
- Hung Dinh, DMDOral and Maxillofacial Surgery (Dentist)1093925521
- Ivy Dinh, HEALTH EDUCATORHealth & Wellness Coach1023908076
- Jamie DinhAssistant Behavior Analyst1528778073
- Mindy Dinh, DNP, CRNACertified Registered Nurse Anesthetist1356006241
- Paul Dinh, M.D.Orthopaedic Hand Surgery Physician1518159961
- Thanh Dinh, DDSGeneral Practice Dentistry1780696963
- Tiffany DinhBehavior Technician1316899883
- Tin Dinh, MDStudent in an Organized Health Care Education/Training Program1306588306
- Tina Dinh, RN, BSNRegistered Nurse1952657264
- Viet Dinh, DMDDentist1366602922
- Jennifer Dinicola, LCSWClinical Social Worker1861455107
- Laura Dinsbach, LCSWClinical Social Worker1104281666
- Alondra DiodoroBehavior Technician1649955113
- Jaslynn DipBehavior Technician1932907656
- Bethany DirkinBehavior Technician1619718863
- Chelsea Dishong, RD, CDCESRegistered Dietitian1538894886
- Gregory DisseStudent in an Organized Health Care Education/Training Program1801587712
- Marissa DivincenzoBehavior Technician1689307969
- Shubham Dixit, DONephrology Physician1932785367
- Kendall DixonBehavior Technician1518764950
- Rose Dixson-WilkinsForensic Psychologist1134476336
- Krishna Diyarza, MSWSocial Worker1417774936
- Pedjay DizonBehavior Technician1326607250
- Hamid Djalilian, M.D.Otology & Neurotology Physician1750331179
- Navid Djassemi, MDPediatric Hematology & Oncology Physician1447754031
- Laila DjifroudiBehavior Technician1538022538
- An Do, MDNeurology Physician1295913614
- Annie Do, M.D.Plastic and Reconstructive Surgery Physician1295267441
- Chau DoOther Technician1932792595
- Cindy DoPharmacist1457937732
- Eric Do, MDStudent in an Organized Health Care Education/Training Program1609518943
- Jeffrey DoBehavior Technician1649085598
- Johnny Do, M.D.Internal Medicine Physician1235371675
- Julie DoBehavior Technician1578452553
- Katelyn DoBehavior Technician1073464087
- Katherine Do, ODOptometrist1598591919
- Kelly DoBehavior Technician1386293603
- Loanne Do, PHARM.DPharmacist1124491063
- Merrianne Do, PHARMDPharmacist1619259710
- Nam Do, RNRegistered Nurse1851230205
- Patrick DoBehavior Technician1871485128
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.