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Healthcare Providers in California

Find doctors, hospitals, and clinics in California from the official NPPES NPI Registry. We found 200 providers in this listing.

200 Providers Found Data from NPPES NPI Registry Updated 2026
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All Providers Doctors Hospitals & Clinics
Showing 196–200 of 200 providers
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Individual (NPI-1) Active

DIONISIO A. FERNANDES MD

Allergy & Immunology, Allergy

📍13847 E 14TH ST., SAN LEANDRO, CA, 94578

📞 510-352-8585

NPI: 1285691121

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Individual (NPI-1) Active

SARAH SAMIMI FIELD MD

Allergy & Immunology, Allergy

📍725 W LA VETA AVE, ORANGE, CA, 92868

📞 714-633-6363

NPI: 1053532366

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Individual (NPI-1) Active

LINDSAY FINKAS M.D.

Allergy & Immunology

📍99 MONTECILLO RD FL 3, SAN RAFAEL, CA, 94903

📞 415-899-7509

NPI: 1619278322

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Individual (NPI-1) Active

CHRISTOPHER WILLIAM FOSTER MD

Internal Medicine, Allergy & Immunology

📍2051 CUSHING RD, SAN DIEGO, CA, 92106

📞 619-524-1519

NPI: 1588710644

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Individual (NPI-1) Active

RICHARD BRIAN FOX M.D.

Allergy & Immunology, Clinical & Laboratory Immunology

📍10 FOREST AVE STE 110, PARAMUS, NJ, 07652

📞 408-718-1915

NPI: 1760571954

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🗺 Cities in California

📍 Los Angeles 📍 San Diego 📍 San Jose 📍 San Francisco 📍 Fresno 📍 Sacramento 📍 Long Beach 📍 Oakland 📍 Bakersfield 📍 Anaheim 📍 Stockton 📍 Riverside 📍 Santa Ana 📍 Irvine 📍 Chula Vista 📍 Fremont 📍 San Bernardino 📍 Modesto 📍 Moreno Valley 📍 Huntington Beach

📊 Quick Stats

Providers Listed 200
Cities Found 20
State California
Source NPPES NPI Registry

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Healthcare in California

California operates the largest state healthcare system in the United States, serving nearly 40 million residents across a diverse landscape of urban megacities, agricultural valleys, and remote mountain communities. The state is home to world-renowned medical institutions including UCSF Medical Center, Cedars-Sinai Medical Center, Stanford Health Care, UCLA Health, and the Scripps Health system in San Diego. These institutions consistently rank among the nation's best for cancer care, neurology, cardiology, and transplant medicine.

California's Medi-Cal program is the largest Medicaid program in the country, covering over 14 million low-income Californians. The state has been a national leader in expanding coverage, and recent reforms have extended Medi-Cal eligibility to all income-eligible adults regardless of immigration status. The Covered California marketplace (coveredca.gov) offers subsidized private insurance plans for those who do not qualify for Medi-Cal.

Despite its healthcare wealth, California faces significant disparities in access. Rural counties in the Central Valley and Northern California have severe physician shortages, and many communities lack specialists entirely. The California Department of Health Care Services (DHCS) (dhcs.ca.gov) oversees Medi-Cal and public health programs, while the California Medical Board (mbc.ca.gov) licenses and disciplines physicians.

California has been a pioneer in telehealth legislation, requiring insurers to cover telehealth services at parity with in-person visits, significantly improving access for rural and underserved populations.

Frequently Asked Questions — California Healthcare