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 26 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
- Frank Ngo, DPTPhysical Therapist1801241575
- Hoai-Han NgoPharmacist1457061954
- Hung Ngo, DPTPhysical Therapist1346482106
- Laura Ngo, MDAnesthesiology Physician1528365681
- Vinh Ngo, PAPhysician Assistant1386796118
- Kelsey Ngole, FNPFamily Nurse Practitioner1083177125
- Alexander Nguyen, DMDGeneral Practice Dentistry1073037891
- Alyssa Nguyen, PHARM.D.Pharmacist1295221604
- Amy NguyenPhysician Assistant1144934324
- An Nguyen, RPHPharmacist1366814360
- An NguyenGeneral Practice Dentistry1992157804
- Andrew NguyenStudent in an Organized Health Care Education/Training Program1255175196
- Andy NguyenBehavior Technician1629719497
- Angela Nguyen, AMFT, APCCMental Health Counselor1871346577
- Angelica NguyenStudent in an Organized Health Care Education/Training Program1063640290
- Anhduong Nguyen, PHARMDPharmacist1073165155
- Bich Thu NguyenNurse Practitioner1841912771
- Bichlien Nguyen, M.D.Hematology & Oncology Physician1417912239
- Bichlien NguyenCase Manager/Care Coordinator1639929409
- Binh Nguyen, PHARM.D.Pharmacist1194853291
- Brian NguyenPharmacist1982013538
- Candice NguyenInterpreter1124976360
- Carolyn Nguyen, PHARMDPharmacist1760209175
- Casie Nguyen, FNPFamily Nurse Practitioner1801155726
- Catherine NguyenSocial Worker1487256806
- Chi Nguyen, M.D.Personal Emergency Response Attendant1972569903
- Christina Nguyen, MDNeuromuscular Medicine (Psychiatry & Neurology) Physician1508186701
- Christine Nguyen, M.D.Ophthalmology Physician1780017897
- Christopher Nguyen, D.D.S.Dentist1497932891
- Cindy Nguyen, LMFTMarriage & Family Therapist1700339306
- Dana NguyenBehavior Technician1790437325
- Daniel Nguyen, PA-CMedical Physician Assistant1962047365
- Daniel NguyenPhysician Assistant1982410684
- Darius NguyenBehavior Technician1437614716
- David Nguyen, MDPediatric Adolescent Medicine Physician1699845156
- David NguyenBehavior Technician1548850365
- David Nguyen, PTAPhysical Therapy Assistant1164270708
- Denise Nguyen, LMFTMarriage & Family Therapist1881844850
- Dewey Nguyen, PHARMDPharmacist1609413707
- Doanh Nguyen, M.D.Specialist1720090921
- Duc Thanh Nguyen, PHARMDPharmacist1740811884
- Duke Nguyen, MDGastroenterology Physician1679557797
- Dung Nguyen, PHARMD.Pharmacist1104948652
- Elizabeth Nguyen, D.O.Ophthalmology Physician1689891640
- Elizabeth Nguyen, LMTMassage Therapist1063022663
- Franchesca Nguyen, D.C.Chiropractor1184189128
- Francie Nguyen, PHARMDPharmacist1578119798
- Francienne Nguyen, PHARM DPharmacist1649491036
- Giang Nguyen, PHARM.D.Pharmacist1255463634
- Hanh Nguyen, PHARM.D.Pharmacist1669991956
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.