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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 16–30 of 200 providers
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Individual (NPI-1) Active

DOERTHE ADRIANA ANDREAE M.D.

Allergy & Immunology

📍165 N UNIVERSITY AVE, FARMINGTON, UT, 84025

📞 801-213-3200

NPI: 1962786111

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Individual (NPI-1) Active

JOSHUA BENJAMIN ANG DO

Allergy & Immunology

📍94 N MADISON AVE, PASADENA, CA, 91101

📞 818-858-2071

NPI: 1699398016

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Individual (NPI-1) Active

KRISTI M ANNECONE FNP

Allergy & Immunology

📍4050 MOORPARK AVENUE, SAN JOSE, CA, 95117

📞 408-243-2700

NPI: 1316038581

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Individual (NPI-1) Active

VIVIAN T ARANEZ M.D.

Allergy & Immunology

📍19582 BEACH BLVD STE 370, HUNTINGTON BEACH, CA, 92648

📞 949-791-3202

NPI: 1699032805

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Individual (NPI-1) Active

PAULA ARDRON MD

Allergy & Immunology, Allergy

📍3733 SAN DIMAS ST, BAKERSFIELD, CA, 93301

📞 800-353-5400

NPI: 1851468789

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Individual (NPI-1) Active

SOWMYA ARJA M.D.

Internal Medicine, Allergy & Immunology

📍450 SUTTER ST STE 1139, SAN FRANCISCO, CA, 94108

📞 415-362-2614

NPI: 1215390166

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Individual (NPI-1) Active

ANNA JUCHE CHEN ARROYO MD

Internal Medicine, Allergy & Immunology

📍300 PASTEUR DR, STANFORD, CA, 94305

📞 650-723-4000

NPI: 1205102472

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Individual (NPI-1) Active

RALPH ASCHER MD

Family Medicine

📍823 GATEWAY CENTER WAY, SAN DIEGO, CA, 92102

📞 619-515-2300

NPI: 1275543258

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Individual (NPI-1) Active

CYNTHIA ASHBROOK

Allergy & Immunology

📍1450 TREAT BLVD, WALNUT CREEK, CA, 94597

📞 925-952-2888

NPI: 1386786408

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Individual (NPI-1) Active

ELLYN ASHIDA MD

Allergy & Immunology

📍4201 TORRANCE BLVD, TORRANCE, CA, 90503

📞 310-944-9098

NPI: 1245201516

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Individual (NPI-1) Active

ALLAN RICHARD AU MD

Allergy & Immunology

📍9727 ELK GROVE FLORIN RD STE 180, ELK GROVE, CA, 95624

📞 916-686-8170

NPI: 1780636761

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Individual (NPI-1) Active

TANIA AUNG M.D.

Allergy & Immunology, Allergy

📍770 MASON ST, VACAVILLE, CA, 95688

📞 707-454-5800

NPI: 1760654263

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Individual (NPI-1) Active

LAWRENCE AWAI M.D.

Internal Medicine, Allergy & Immunology

📍4776 STETSON RD, CLOVIS, CA, 93619

📞 559-323-1296

NPI: 1629510235

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Individual (NPI-1) Active

JULIA BAE MD

Allergy & Immunology, Allergy

📍3733 SAN DIMAS ST, BAKERSFIELD, CA, 93301

📞 800-353-5400

NPI: 1821169897

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Individual (NPI-1) Active

JENNIFER J BAIK M.D.

Allergy & Immunology

📍300 S HOBART BLVD, LOS ANGELES, CA, 90020

📞 213-385-9090

NPI: 1497764989

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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