2026 data CMS NPPES NUCC Taxonomy

Doctors in Fontana, CA

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

2,932
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Pharmacist
Top specialty
228 providers
California
State
CA

2,932 healthcare providers across 20 specialties

Fontana, California appears in the CMS National Plan and Provider Enumeration System with 2,932 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 Fontana — 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 Fontana practice location on file.

The provider mix in Fontana is weighted toward Pharmacist (228 clinicians, followed by Student in an Organized Health Care Education/Training Program with 212 and Family Medicine Physician with 187). 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, Fontana reports roughly 7.5 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 Fontana 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 NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.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.

2,932
Providers
20
Specialties
7.5
Per 100K (state)

Which specialties are most common in Fontana

Pharmacist 228
Student in an Organized Health Care Education/Training Program 212
Family Medicine Physician 187
Behavior Technician 138
Internal Medicine Physician 112
Physician Assistant 92
Licensed Vocational Nurse 72
Pediatrics Physician 71
Marriage & Family Therapist 70
Clinical Social Worker 70
Certified Registered Nurse Anesthetist 66
Physical Therapist 66
Family Nurse Practitioner 64
General Practice Dentistry 63
Emergency Medicine Physician 54
Obstetrics & Gynecology Physician 50
Optometrist 50
Registered Nurse 49
Nurse Practitioner 46
Dentist 46

Healthcare Providers (Page 30)

Name
JOHN LEONG, DO
Student in an Organized Health Care Education/Training Program
THOMAS LEONG, PHARMD
Pharmacist
CARMELA LEONORA, MD
Interventional Cardiology Physician
DEREK LEUNG, M.D.
Internal Medicine Physician
GREGORY LEUNG, PA
Physician Assistant
KELLY LEUNG, D.O.
Family Medicine Physician
MONICA LEUNG, MD
Body Imaging Physician
PETER LEUNG, DO
Family Medicine Physician
POLLYANNA LEUNG
Pharmacist
RITA LEUNG, RD
Registered Dietitian
LOIS LEVITT
Community Health Worker
BENJAMIN LEW, DO
Student in an Organized Health Care Education/Training Program
ALISHA LEWIS, CNM
Advanced Practice Midwife
DAMARIS LEWIS
Licensed Vocational Nurse
HARRY LEWIS, MD
Psychiatry Physician
KATHERINE LEWIS, PA
Physician Assistant
STACY LEWIS, CBRE
Health Educator
MARGARITA LEWIS-UPTON
Gerontology Nurse Practitioner
DEREK LI, MD
Internal Medicine Physician
TINA LI, OD
Ophthalmology Physician
YANG LI, D.O.
Internal Medicine Physician
CONRAD LIANG, M.D., PH.D.
Vascular Neurology Physician
JOHN LIANG
Pharmacist
PATRICIA LIANG, OD
Optometrist
NASSER LIASI, MD
Internal Medicine Physician
AURORA LIBBEY
Clinical Social Worker
AMY LIEN, PHARMD
Pharmacist
MEI LIEU
Pharmacist
KIMBERLY LIGHT-ALLENDE, PSY.D.
Clinical Psychologist
CATALINA LIM, MD
Neurology Physician
NANCY LIM, MD
Family Medicine Physician
NELLY LIM, PA-C
Physician Assistant
PAUL LIM
Medical Physician Assistant
YOU SEUNG LIM
Acupuncturist
ANTONY LIN, MD
Rheumatology Physician
CYRUS LIN, MD
Student in an Organized Health Care Education/Training Program
KATHERINE LIN, D.O.
Internal Medicine Physician
KATHRYN LIN, MD
Internal Medicine Physician
MARIA LIN, M.D.
Pediatrics Physician
RUBIN LIN, D.O.
Family Medicine Physician
YENNI LIN, PHARM.D
Pharmacist
ANDREW LINARES
Student in an Organized Health Care Education/Training Program
DENNIS LINDEBORG, MD
Anesthesiology Physician
VALERIE LINDEBORG, PHARM D
Oncology Pharmacist
RICHARD LINDWALL, D.C.
Chiropractor
KERRY LITMAN, MD
Family Medicine Physician
DENISHA LITTLE, LVN
Licensed Vocational Nurse
CHERYL LIU, PA-C
Student in an Organized Health Care Education/Training Program
DAVID LIU, MD
Internal Medicine Physician
GRACE LIU, DO
Anesthesiology 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 Fontana, CA?
There are 2,932 registered healthcare providers in Fontana, CA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Fontana?
The most common specialties in Fontana are Pharmacist, Student in an Organized Health Care Education/Training Program, Family Medicine Physician, Behavior Technician, Internal Medicine Physician. Pharmacist has the most providers with 228.

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.