2026 data CMS NPPES NUCC Taxonomy

Doctors in Fountain Valley, CA

Active healthcare providers in Fountain Valley sourced from the CMS NPPES weekly file — no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

2,193
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Behavior Technician
Top specialty
205 providers
California
State
CA

2,193 healthcare providers across 20 specialties

Fountain Valley, California appears in the CMS National Plan and Provider Enumeration System with 2,193 registered healthcare providers spanning 20 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.

The provider mix in Fountain Valley is weighted toward Behavior Technician (205 clinicians, followed by Pharmacist with 142 and Marriage & Family Therapist with 103). 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.

For Fountain Valley patients, this directory is most useful as a starting shortlist — searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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 NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

2,193
Providers
20
Specialties
5.6
Per 100K (state)

Which specialties are most common in Fountain Valley

Behavior Technician 205
Pharmacist 142
Marriage & Family Therapist 103
Internal Medicine Physician 95
Other Technician 74
Physician Assistant 65
Clinical Social Worker 60
Mental Health Counselor 55
Physical Therapist 53
Chiropractor 52
Family Medicine Physician 46
Anesthesiology Physician 45
Family Nurse Practitioner 43
Pediatrics Physician 43
Specialist 43
Dentist 43
General Practice Dentistry 41
Rehabilitation Practitioner 40
Student in an Organized Health Care Education/Training Program 38
Social Worker 36

Healthcare Providers (Page 28)

Name
MY NGUYEN, PHARM.D.
Pharmacist
MYDUYEN NGUYEN, MD
Pediatrics Physician
NANCY NGUYEN, PHD., LMFT
Marriage & Family Therapist
NATALIE NGUYEN
Mental Health Counselor
NGOCANH NGUYEN, M.A., BCBA
Behavior Analyst
NGUYEN NGUYEN, M.D.
Internal Medicine Physician
PATRICK NGUYEN
Physician Assistant
PAUL NGUYEN, BEHAVIOR TECHNICIAN
Behavior Technician
PETER NGUYEN, DO
Otolaryngology/Facial Plastic Surgery Physician
PETER NGUYEN, ACSW
Mental Health Counselor
PHILIP NGUYEN
Behavior Technician
PHUC NGUYEN
Pharmacist
PHUC NGUYEN, BT
Health Information Specialist/Technologist
PHUONG NGUYEN, D.C.
Chiropractor
PHUONG NGUYEN, PHARM. D
Pharmacist
QUAN NGUYEN, M.D.
Specialist
QUY NGUYEN, D.C.
Chiropractor
QUYEN NGUYEN
Behavior Technician
QUYNH NGUYEN, M.A, BCBA
Behavior Analyst
QUYNH-NHU NGUYEN, PHARM.D.
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist
RICHARD NGUYEN
Behavior Technician
ROSE NGUYEN, SLPA
Speech-Language Assistant
SHAWN NGUYEN, PHARMD
Pharmacist
SHEILA NGUYEN, MD
Pediatrics Physician
SON NGUYEN, PHARM.D.
Pharmacist
STANLEY NGUYEN
Student in an Organized Health Care Education/Training Program
TAYLOR NGUYEN
Counselor
THANG NGUYEN, MD
Surgery Physician
THANH NGUYEN, M.D.
Otolaryngology Physician
THANH NGUYEN
Pediatrics Physician
THANH NGUYEN, FNP
Nurse Practitioner
THANH NGUYEN, DMD
General Practice Dentistry
THANH DUC NGUYEN, DMD
Dentist
THAO NGUYEN
Family Nurse Practitioner
THIEN NGUYEN, PHARM.D.
Pharmacist
THOMAS NGUYEN, D.C.
Chiropractor
THOMAS NGUYEN, D.D.S.
General Practice Dentistry
THU HUYEN NGUYEN, PHARM D.
Pharmacist
TIEN NGUYEN, MD
Dermatology Physician
TIEN NGUYEN, MD
Orthopaedic Surgery Physician
TIEP NGUYEN, DDS
General Practice Dentistry
TIFFANY NGUYEN
Pharmacist
TIFFENY NGUYEN
Speech-Language Pathologist
TIMOTHY NGUYEN, DDS
General Practice Dentistry
TRACY NGUYEN, PHARMD
Pharmacist
TRACY NGUYEN
Mental Health Counselor
TRACY NGUYEN, PHARMD
Pharmacist
TRI NGUYEN, M.D.
Ophthalmology Physician
TRONG NGUYEN, MD
Orthopaedic Surgery Physician
TRONGDAVID NGUYEN
Behavior Technician

Nearby Cities in California

Other California cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Fountain Valley, CA?
There are 2,193 registered healthcare providers in Fountain Valley, CA, covering 20 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 205.

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.