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 146 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
- Nicolette MarinelloAthletic Trainer1659845832
- Amanda Marinko, PA-CPhysician Assistant1922731793
- Martin Marino, NPAcute Care Nurse Practitioner1720302862
- Adriana Mariscal, FNP-CFamily Nurse Practitioner1447848171
- Maria MariscalMassage Therapist1063192821
- Michelle MariscalBehavior Technician1871297556
- Hope MarkleyBehavior Technician1326881020
- Barry Marks, DCChiropractor1104840669
- Karen Marks, LCSWClinical Social Worker1609966373
- Connie MarquezSocial Worker1669086773
- Daisy MarquezBehavior Technician1871062901
- Destini MarquezBehavior Technician1972352128
- Erika MarquezMental Health Counselor1336780022
- Jovana MarquezAssistant Behavior Analyst1952975856
- Lilyanna MarquezBehavior Technician1871355024
- Oscar MarquezDay Training/Habilitation Specialist1477317634
- Pilar MarquezMarriage & Family Therapist1528538717
- Abril Marquez-BravoBehavior Technician1215786991
- Julianne MarquizBehavior Technician1962352039
- Lesly MarreroBehavior Technician1588539183
- Megan MarronBehavior Technician1750015004
- Sarahi Marroquin JijonBehavior Technician1134862253
- Linda Marroquin OscalBehavior Technician1891565297
- Alexander Marrotte, M.D.Surgery Physician1407207137
- Denesis Marrufo RavBehavior Technician1356279343
- Melanie Mars, N.P.Family Nurse Practitioner1023405537
- Damara Marshall, AUDAudiologist1285200451
- Deneishah MarshallMental Health Counselor1134763204
- Freya Marshall, M.D.Student in an Organized Health Care Education/Training Program1760711220
- Jason MarshallAddiction (Substance Use Disorder) Counselor1770932709
- John Marshall, M.D.Emergency Medicine Physician1346596970
- Kimberly Marshall, DPTPhysical Therapist1659301158
- Lila MarshallGynecologic Oncology Physician1508446907
- Linta Marshall, FNP-CFamily Nurse Practitioner1992503437
- Melinda Marshall, M.D.Student in an Organized Health Care Education/Training Program1932548047
- Rachelle Marshall, LMFTMarriage & Family Therapist1649717612
- Shellagh Marshall-Young, CAS IIAddiction (Substance Use Disorder) Counselor1013290253
- Lindsay Marsicek, NPAcute Care Nurse Practitioner1578316279
- Laura Marten, CRNACertified Registered Nurse Anesthetist1619615606
- Amando Martin, RPHPharmacist1184221822
- Andrew Martin, MSN,APRN,CPNP,CCRNPrimary Care Nurse Practitioner1679203145
- Brandi Martin, LMFTMarriage & Family Therapist1467927681
- Brendan Martin, MDPhysical Medicine & Rehabilitation Physician1407558273
- Christina Martin, NP-BCPsychiatric/Mental Health Nurse Practitioner1740043330
- Darrin MartinAddiction (Substance Use Disorder) Counselor1790308690
- Iridian MartinSocial Worker1881314441
- Jaime Martin, LCSWClinical Social Worker1346921699
- James Martin, SUDCCAddiction (Substance Use Disorder) Counselor1861016578
- Jan Michelle MartinStudent in an Organized Health Care Education/Training Program1164000675
- Joan MartinBehavior Technician1508631300
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.