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 28 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
- Phuong Nguyen, D.C.Chiropractor1801935002
- Phuong Nguyen, PHARM. DPharmacist1689796138
- Quan Nguyen, M.D.Specialist1760402770
- Quy Nguyen, D.C.Chiropractor1083934459
- Quyen NguyenBehavior Technician1265015598
- Quynh Nguyen, M.A, BCBABehavior Analyst1740539659
- Quynh-Nhu Nguyen, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1326208190
- Richard NguyenBehavior Technician1508508474
- Rose Nguyen, SLPASpeech-Language Assistant1033352000
- Shawn Nguyen, PHARMDPharmacist1770851206
- Sheila Nguyen, MDInternal Medicine Physician1033435987
- Son Nguyen, PHARM.D.Pharmacist1912682154
- Stanley NguyenInternal Medicine Physician1164954145
- Taylor NguyenCounselor1336806249
- Thang Nguyen, MDSurgery Physician1831279009
- Thanh Nguyen, M.D.Otolaryngology Physician1508862061
- Thanh NguyenPediatrics Physician1245431915
- Thanh Nguyen, FNPNurse Practitioner1972998094
- Thanh Nguyen, DMDGeneral Practice Dentistry1477022655
- Thanh Duc Nguyen, DMDDentist1093854788
- Thao NguyenFamily Nurse Practitioner1932666955
- Thien Nguyen, PHARM.D.Pharmacist1760500979
- Thomas Nguyen, D.C.Chiropractor1811029960
- Thomas Nguyen, D.D.S.General Practice Dentistry1811107980
- Thu Huyen Nguyen, PHARM D.Pharmacist1174656649
- Thu Vinh Nguyen, PA-CPhysician Assistant1831045541
- Tien Nguyen, MDDermatology Physician1396741351
- Tien Nguyen, MDNeurological Surgery Physician1356385025
- Tiep Nguyen, DDSGeneral Practice Dentistry1851461016
- Tiffany NguyenPharmacist1699918623
- Tiffeny NguyenSpeech-Language Pathologist1205665882
- Timothy Nguyen, DDSGeneral Practice Dentistry1164249181
- Tracy Nguyen, PHARMDPharmacist1770910697
- Tracy NguyenMental Health Counselor1013317528
- Tracy Nguyen, PHARMDPharmacist1689456329
- Tri Nguyen, M.D.Ophthalmology Physician1669436002
- Trong Nguyen, MDSports Medicine (Orthopaedic Surgery) Physician1427221134
- Trongdavid NguyenBehavior Technician1326503608
- Trung Nguyen, M.D.Ophthalmology Physician1316941966
- Tu Nguyen, MDAnesthesiology Physician1114931961
- Tuan Nguyen, M.D.Interventional Cardiology Physician1669644951
- Van Nguyen, PHARMACISTPharmacist1780809178
- Vina Nguyen, M. D.Hospitalist Physician1013250497
- Vu NguyenFoot & Ankle Surgery Podiatrist1629478094
- Vu NguyenBehavior Technician1427771898
- Xuanmai NguyenRegistered Dietitian1083022941
- Yvonne NguyenPain Management Pharmacist1124983390
- Diana Nguyen Pham, MDFamily Medicine Physician1013064005
- Catherine Nguyen-Loh, DOFamily Medicine Physician1558828848
- Tramy Nguyen-Mok, M.D.Pediatrics Physician1144322645
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.