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 57 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
- Gregorio De PerioMental Health Counselor1609123314
- Leslie De RosasBehavior Technician1770274466
- Anthony De SantiagoBehavior Technician1447147780
- Martin De SantiagoBehavior Technician1861225484
- Constance De Silva, MDPsychiatry Physician1912922634
- K De Silva, MDPsychiatry Physician1992730170
- Mandy De SilvaBehavior Technician1952283319
- Trisha De SouzaMental Health Counselor1205965043
- Amer De Veyra, PT, DPTPhysical Therapist1891594347
- Michael De Virgilio, MDStudent in an Organized Health Care Education/Training Program1841933256
- Madushka De Zoysa, MDObstetrics & Gynecology Physician1023533387
- Sabrina Dealmeida, MDPediatrics Physician1700581964
- Erin Dean, M.D.Hematology & Oncology Physician1376962449
- Iman Dean, DMDDentist1861064057
- Margaret DeanBehavior Technician1477238475
- Molly Deane, M.D.Surgery Physician1740411644
- Wyatt DeaneBehavior Technician1366011876
- Liza DearingSchool Psychologist1619815016
- Jacqueline Deats, NPNurse Practitioner1265847529
- Susan Debin, M.D.Legal Medicine1023079449
- Kendra DeboerSpeech-Language Pathologist1184164303
- Daniel Debottis, MDOrthopaedic Surgery Physician1407019391
- Ariala DeckAddiction (Substance Use Disorder) Counselor1033858717
- Jeffrey Deckey, MDOrthopaedic Surgery of the Spine Physician1124015235
- Lauren DecremerBehavior Technician1669973558
- Christine Decristofaro, MA, IMFMarriage & Family Therapist1578965893
- Nathan Dedic, M.S., PA-CPhysician Assistant1740560382
- Mary Deeman, PHARMDPharmacist1083044390
- Helia DeganBehavior Technician1205791449
- Patricia Degraw-Schwartz, DDSDentist1497768907
- Catherine Deguzman, NP FACPrimary Care Nurse Practitioner1528076536
- Conrad Deguzman, BCBABehavior Analyst1588221139
- Mya DeguzmanBehavior Technician1265328595
- Roxanne DeguzmanBehavior Technician1922981463
- Sidney DejoieBehavior Technician1043951379
- Austin Dejong, DOEmergency Medicine Physician1992407886
- Meghan Dekitani, MDInternal Medicine Physician1790348779
- Jenina Del CampoPsychiatric/Mental Health Nurse Practitioner1053046953
- Isabel Del Canto, MDStudent in an Organized Health Care Education/Training Program1649850595
- F. Immanuel Del CastilloCommunity Health Worker1619817681
- Krystal Del Castillo, MDPsychiatry Physician1780324152
- Michael Del JuncoInternal Medicine Physician1679063127
- Robert Del Junco, M.D.Otolaryngology Physician1295734721
- Joaquin Miguel Del MundoBehavior Technician1013777333
- Shandel Del PielagoBehavior Technician1346920204
- Jenniffer Del RealBehavior Technician1841060621
- Lauren Elizabeth Del Rio, CRNACertified Registered Nurse Anesthetist1871283309
- Marie Faustene Del Rosario, M.A., BCBABehavior Analyst1992116156
- Maria Del Valle Estopinal, MDAnatomic Pathology & Clinical Pathology Physician1770840001
- Myra Dela CruzBehavior Technician1871241471
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.