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 NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.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 26)

Name
DEEPMALA NANDANWAR, M.D.
Neurology Physician
LISA NARUO
Pharmacist
NAHID NASR, M.D.
Anesthesiology Physician
PEDRAM NASSI, PHARM D
Pharmacist
ANGELI MAE NAZARETH, PHARMD
Pharmacist
ROBERT NEILAN, M.D.
Hospitalist Physician
ERIC NELSON, MD
Emergency Medicine Physician
HALEY NELSON, BT
Other Technician
JOCELYN NERI-ROMERO
Rehabilitation Practitioner
PHILIP NEWBERG, PH. D.
Clinical Psychologist
JENNIE NEWMAN, LCSW
Clinical Social Worker
DANIEL NG, PHARM.D
Pharmacist
ROBERT NG, PHARMD
Pharmacist
ELIZABETH NGHIEM, M.D.
Infectious Disease Physician
CATHERINE NGO, NP
Family Nurse Practitioner
FRANK NGO, DPT
Physical Therapist
HOAI-HAN NGO
Pharmacist
HUNG NGO, DPT
Physical Therapist
LAURA NGO, MD
Anesthesiology Physician
VINH NGO, PA
Physician Assistant
KELSEY NGOLE, FNP
Family Nurse Practitioner
ALEXANDER NGUYEN
Family Nurse Practitioner
ALEXANDER NGUYEN, DMD
General Practice Dentistry
ALYSSA NGUYEN, PHARM.D.
Pharmacist
AMY NGUYEN
Physician Assistant
AN NGUYEN, RPH
Pharmacist
AN NGUYEN
General Practice Dentistry
ANDREW NGUYEN
Student in an Organized Health Care Education/Training Program
ANDY NGUYEN
Behavior Technician
ANGELA NGUYEN, AMFT, APCC
Mental Health Counselor
ANGELICA NGUYEN
Student in an Organized Health Care Education/Training Program
ANHDUONG NGUYEN, PHARMD
Pharmacist
BICH THU NGUYEN
Nurse Practitioner
BICHLIEN NGUYEN, M.D.
Hematology & Oncology Physician
BICHLIEN NGUYEN
Case Manager/Care Coordinator
BINH NGUYEN, PHARM.D.
Pharmacist
BRIAN NGUYEN
Pharmacist
CAROLYN NGUYEN, PHARMD
Pharmacist
CASIE NGUYEN, FNP
Family Nurse Practitioner
CATHERINE NGUYEN
Social Worker
CHI NGUYEN, M.D.
Personal Emergency Response Attendant
CHRISTINA NGUYEN, MD
Neuromuscular Medicine (Psychiatry & Neurology) Physician
CHRISTINE NGUYEN, M.D.
Glaucoma Specialist (Ophthalmology) Physician
CHRISTOPHER NGUYEN, D.D.S.
Dentist
CINDY NGUYEN, LMFT
Marriage & Family Therapist
DANA NGUYEN
Behavior Technician
DANIEL NGUYEN, PA-C
Physician Assistant
DANIEL NGUYEN
Physician Assistant
DARIUS NGUYEN
Behavior Technician
DAVID NGUYEN, MD
Pediatric Adolescent Medicine Physician

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.