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 NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.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 27)

Name
DAVID NGUYEN
Behavior Technician
DAVID NGUYEN, PTA
Physical Therapy Assistant
DENISE NGUYEN, LMFT
Marriage & Family Therapist
DEWEY NGUYEN, PHARMD
Pharmacist
DOANH NGUYEN, M.D.
Specialist
DUC THANH NGUYEN, PHARMD
Pharmacist
DUKE NGUYEN, MD
Gastroenterology Physician
DUNG NGUYEN, PHARMD.
Pharmacist
ELIZABETH NGUYEN, D.O.
Ophthalmology Physician
ELIZABETH NGUYEN, LMT
Massage Therapist
FRANCHESCA NGUYEN, D.C.
Chiropractor
FRANCIE NGUYEN, PHARMD
Pharmacist
FRANCIENNE NGUYEN, PHARM D
Pharmacist
GIANG NGUYEN, PHARM.D.
Pharmacist
HANH NGUYEN, PHARM.D.
Pharmacist
HANH NGUYEN
Occupational Therapy Assistant
HANNAH NGUYEN
Behavior Technician
HENNIE NGUYEN
Community Health Worker
HENRY-VU NGUYEN, D.D.S.
Dentist
HINH NGUYEN, PA
Physician Assistant
HOA NGUYEN, PHARMD
Pharmacist
HOA HUYNH NGUYEN, DDS
General Practice Dentistry
HOANG NGUYEN, M.D.
Internal Medicine Physician
HOANG NGUYEN, M.D.
Internal Medicine Physician
HOGAN NGUYEN, PHARMD
Pharmacist
HUNG NGUYEN, M.D.
Anesthesiology Physician
HUONG NGUYEN, B.C.B.A.
Behavior Analyst
ISABEL NGUYEN, PA-C
Physician Assistant
IVY NGUYEN, MSW
Clinical Social Worker
JACKIE NGUYEN, D.D.S.
Dentist
JENNI NGUYEN, DDS
General Practice Dentistry
JIMMY NGUYEN
Behavior Technician
JULIE NGUYEN, RPH
Pharmacist
KAITLYN NGUYEN, P.A.C.
Medical Physician Assistant
KELLY NGUYEN, PHARMD
Pharmacist
KELLY NGUYEN
Behavior Technician
KHOA NGUYEN
Pharmacy Technician
KIET NGUYEN, PHARMD
Pharmacist
KIMBERLY NGUYEN, LCSW
Clinical Social Worker
LENA NGUYEN, DO
Obstetrics & Gynecology Physician
LINH DAN NGUYEN, M.D.
Specialist
LOC NGUYEN, MD
Plastic Surgery Physician
LUONG NGUYEN, D.M.D.
Dentist
MAI NGUYEN, PHARM.D
Pharmacist
MAI PHUONG NGUYEN, MD
Internal Medicine Physician
MAITIEN NGUYEN, PHARM. D
Pharmacotherapy Pharmacist
MICHELLE NGUYEN, PHARM.D
Pharmacotherapy Pharmacist
MICKEY NGUYEN, MD
Student in an Organized Health Care Education/Training Program
MINH THUOC NGUYEN
Pharmacist
MINH-TRI NGUYEN, DMD
Dentist

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.