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 59 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
- Frank Denunzio, D.D.S.Dentist1336359793
- Reegan Deogracia, PAPhysician Assistant1629799127
- John Depaola, M.A.Marriage & Family Therapist1750636874
- Grace Der SahagianBehavior Technician1649103490
- Kypros Dereschuk, BSBehavior Technician1952019564
- Jeffrey Derflinger, PH.D.Clinical Psychologist1023106754
- Samantha Derose, BCBABehavior Analyst1144633827
- Alyssa DerouinBehavior Technician1376383992
- Hema Desai, CCC-SLP, BCS-SSpeech-Language Pathologist1255293585
- Kavita Desai, M.D.Family Medicine Physician1710013131
- Nilima Desai, MPH, RDRegistered Dietitian1275831794
- Seema DesaiPsychiatry Physician1548382294
- Sheetal Desai, MDRheumatology Physician1699966861
- Usha Desai, RNFARegistered Nurse First Assistant1144357914
- Jeffrey Desantis, DPMFoot & Ankle Surgery Podiatrist1659371748
- Shilpa Deshmukh, M.D.Internal Medicine Physician1790723203
- Prajakta Deshpande, MDFamily Medicine Physician1760576094
- Joshua DetwilerBehavior Technician1922873272
- Ashley DevaereStudent in an Organized Health Care Education/Training Program1457089005
- Karissa DevaryBehavior Technician1194587360
- Ryan DevaughnBehavior Technician1982487047
- Alisha Devers, DPTPhysical Therapist1689227274
- Lynne Devian, DDSDentist1609294669
- Naomie Devico MarcianoStudent in an Organized Health Care Education/Training Program1386402568
- Ben Devine, PHARM.D.Pharmacist1679875801
- Sandeep Dhadvai, M.D.Pediatrics Physician1790217230
- Namneet Dhaliwal, PAMedical Physician Assistant1194846691
- Wanya DhamiBehavior Technician1174228043
- Krishma Dhani, AMFT 150035Marriage & Family Therapist1962214932
- Shagun Dhanju, MDPediatrics Physician1174382477
- Sonrisa DharBehavior Technician1760331839
- Vijay Dhar, M.D.Neonatal-Perinatal Medicine Physician1609951888
- Puneet Dhawan, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1447247853
- Mehron Dhillon, MDPsychiatry Physician1023703980
- Taizoon Dhoon, MDAnesthesiology Physician1801187091
- Andrea Di LisioAddiction (Substance Use Disorder) Counselor1396375234
- Sophia Di PasquaBehavior Technician1588598684
- Marcos Di Pinto, PH.D.Clinical Neuropsychologist1073760906
- Dale Di Stefano, M.D.Neurology Physician1902822968
- Pamela Maree Di Tomasso, PHARMDPharmacist1992228423
- John Diab, PAPhysician Assistant1164687570
- Dragos Diaconescu, M.D.Anesthesiology Physician1851325518
- Naresh Dialani, D.D.S.Dentist1578770368
- Gloria DialynasClinical Social Worker1235253584
- Catherine Diamond, MDInfectious Disease Physician1649350786
- Maximo Diamond, M.D.Internal Medicine Physician1063519932
- Brooke DiasBehavior Technician1780549931
- Adrian DiazBehavior Technician1851048433
- Amilcar Diaz, M.D.Body Imaging Physician1831482629
- Andres Diaz, MDStudent in an Organized Health Care Education/Training Program1841040458
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.