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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 31–45 of 200 providers
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Individual (NPI-1) Active

RAMI ALREZK MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍29995 TECHNOLOGY DR STE 305, MURRIETA, CA, 92563

📞 951-574-3636

NPI: 1003111519

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Individual (NPI-1) Active

RAMBOD AMANI-YAZDI M.D MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍1330 W COVINA BLVD, SAN DIMAS, CA, 91773

📞 909-267-9138

NPI: 1811978364

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Individual (NPI-1) Active

MARYAM AMIR M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍1020 29TH ST STE 270, SACRAMENTO, CA, 95816

📞 916-455-3700

NPI: 1114379039

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Individual (NPI-1) Active

ALIREZA AMIRPOUR

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍510 SUPERIOR AVE STE B, NEWPORT BEACH, CA, 92663

📞 949-791-3001

NPI: 1275997900

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Individual (NPI-1) Active

RANDALL A AMMON M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍1 COUNTRY CLUB PLZ, ORINDA, CA, 94563

📞 925-254-3805

NPI: 1306933783

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Individual (NPI-1) Active

SEERAT ANAND M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍790 E BONITA AVE FL 2, POMONA, CA, 91767

📞 909-447-8585

NPI: 1417575085

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Individual (NPI-1) Active

SHWETHA ANAND M.D

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍13851 EAST 14TH STREET, SAN LEANDRO, CA, 94578

📞 510-351-1193

NPI: 1700079035

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Individual (NPI-1) Active

BOGI ANDERSEN MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍UCI MEDICAL CENTER, ORANGE, CA, 92868

📞 714-456-8978

NPI: 1164502233

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Individual (NPI-1) Active

CHRISTEN MARIE ANDERSON MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍756 POINSETTIA PARK S, ENCINITAS, CA, 92024

📞 760-436-5912

NPI: 1609979517

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Individual (NPI-1) Active

MARK S. ANDERSON MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍400 PARNASSUS AVE, SAN FRANCISCO, CA, 94143

📞 415-353-2266

NPI: 1013971001

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Individual (NPI-1) Active

GAJA ANDZEL M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍33758 YUCAIPA BLVD, YUCAIPA, CA, 92399

📞 909-795-9747

NPI: 1821231648

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Individual (NPI-1) Active

TREVOR ANGELL MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍1500 DUARTE RD, DUARTE, CA, 91010

📞 800-826-4673

NPI: 1902106503

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Individual (NPI-1) Active

JUSTIN PIERCE ANNES M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍300 PASTEUR DR, STANFORD, CA, 94305

📞 650-723-4000

NPI: 1013027424

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Individual (NPI-1) Active

ADEELA N ANSARI M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍8220 WYMARK DR STE 200, ELK GROVE, CA, 95757

📞 916-667-0600

NPI: 1427234012

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Individual (NPI-1) Active

DIANA M. ANTONIUCCI MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍1375 SUTTER ST, SAN FRANCISCO, CA, 94109

📞 415-600-0110

NPI: 1164486676

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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