Doctors and health care providers in Fountain Valley, CA
2,190 individual NPPES records list a practice address in Fountain Valley, 99th of 812 California cities. The largest group is behavior technician: 207, 9% of the city's records, against 18% across California. Page 43 of 44.
The 8 largest groups in Fountain Valley
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Fountain Valley in California
- Rank in California99th of 812 cities by records
- Share of the state0.2% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups20.6% of all records
Compared with California as a whole, Fountain Valley has 15.6× the state's share of other technician records and 0.31× its share of student in an organized health care education/training program records.
Providers in Fountain Valley, alphabetically
- Charles Wetter, PA-CMedical Physician Assistant1275591356
- Tryniti WeykerMarriage & Family Therapist1861292393
- Hannah WhitfieldBehavior Technician1255834339
- David WhitsettPsychologist1548742083
- Armand Widjaja, M.D.Pediatrics Physician1336335322
- Deborah Wieland, PSYD, LMFTMarriage & Family Therapist1245776681
- Vijayalakshmi Wijeyakumar, M.D.Nephrology Physician1053491332
- Kenneth Wilkens, MDOrthopaedic Trauma Physician1679519649
- Alexa Wilkenson, CCC-SLPSpeech-Language Pathologist1720621212
- Linda Wilkinson-Taylor, D.C.Chiropractor1689743023
- Colleen Williams, MA, BCBA LBABehavior Analyst1073961447
- Erin Williams, RBTBehavior Technician1093257065
- Gemma Williams, LCSWClinical Social Worker1124218409
- Madeline WilliamsMidwife1467184408
- Megan Williams, NONERehabilitation Practitioner1588329031
- Randal WilliamsContractor1003334152
- Patrick Willson, OTOccupational Therapist1790193860
- Cole Wilsie, PTAPhysical Therapy Assistant1043896889
- Claire Wilson, PH.D.Mental Health Counselor1275524753
- Jessica Wilson, RD,CDERegistered Dietitian1932727245
- Julie WinnReflexologist1053542399
- Kevin WinnOther Technician1922061563
- Justin Winters, BTCase Manager/Care Coordinator1821456906
- Wendell Witte, M.D.Family Medicine Physician1962416339
- Adam Wong, M.D.Anesthesiology Physician1457419046
- Arlet WongSpeech-Language Assistant1881478683
- Ashley Wong, DOPain Medicine (Physical Medicine & Rehabilitation) Physician1841687472
- Janice Wong, PHAM.D.Pharmacist1407980790
- Jeffrey Wong, M.D.Orthopaedic Surgery Physician1164790507
- Jennifer Wong, M.D.Cardiovascular Disease Physician1013029065
- Jennifer Wong, PTAPhysical Therapy Assistant1811870512
- Keith Wong, ODOptometrist1568950657
- Larry Wong, M.D.Anesthesiology Physician1427001775
- Marilyn WongSchool Counselor1922965953
- Michael Wong, D.O.Anesthesiology Physician1104082098
- Richard Wong, M.D.Geriatric Medicine (Internal Medicine) Physician1659416436
- Lynette Woo-Sam, RN, FNP-BCFamily Nurse Practitioner1427716612
- Kerry Wood, NPNurse Practitioner1033760772
- Alyssa Woolley, BTOther Technician1871094904
- Jazmine WorkmanStudent in an Organized Health Care Education/Training Program1740702224
- Alexis Worth, NPFamily Nurse Practitioner1679994834
- Geoffrey Wrenn, M.A.Marriage & Family Therapist1790214666
- Adela WrightMarriage & Family Therapist1982907861
- Heather WrightTechnician/Technologist1992366439
- Jamie WrightMassage Therapist1528836921
- Howard Wu, D.M.D.General Practice Dentistry1194044990
- Kin Wai Wu, PTPhysical Therapist1003880899
- Stephanie WyckoffObstetrics Physician1679659080
- Frank XingNeurology Physician1750792545
- Hanna YamaguchiBehavior Technician1154032688
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Fountain Valley, California appears in the CMS National Plan and Provider Enumeration System with 2,190 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 Fountain Valley - 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 Fountain Valley 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 Fountain Valley is weighted toward Behavior Technician (207 clinicians, followed by Pharmacist with 144 and Marriage & Family Therapist with 101). 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, Fountain Valley reports roughly 5.6 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Fountain Valley practice address, a coverage gap Fountain Valley patients typically fill by traveling to a larger nearby hub.
For Fountain Valley 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 Fountain Valley, CA?
There are 2,190 registered healthcare providers in Fountain Valley, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Fountain Valley?
The most common specialties in Fountain Valley are Behavior Technician, Pharmacist, Marriage & Family Therapist, Internal Medicine Physician, Other Technician. Behavior Technician has the most providers with 207.
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.