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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

THOMAS G AHN MD

Internal Medicine

📍2080 CENTURY PARK E STE 1410, LOS ANGELES, CA, 90067

📞 310-277-7600

NPI: 1669556866

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Individual (NPI-1) Active

MARGOT J AIKEN MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍3927 WARING RD STE C, OCEANSIDE, CA, 92056

📞 760-941-9850

NPI: 1952476236

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Individual (NPI-1) Active

CHUKWUKA AKAMNONU M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍245 TERRACINA BLVD STE 209, REDLANDS, CA, 92373

📞 909-793-3311

NPI: 1225423353

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Individual (NPI-1) Active

TUGCE AKCAN MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍300 PASTEUR DR, STANFORD, CA, 94305

📞 650-723-4000

NPI: 1780294074

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Individual (NPI-1) Active

MITCHELL STUART AKMAN M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍1555 EAST ST, REDDING, CA, 96001

📞 530-229-1844

NPI: 1831266345

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Individual (NPI-1) Active

MOHAMAD AL SAYED MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍4234 RIVERWALK PKWY STE 230, RIVERSIDE, CA, 92505

📞 951-373-5819

NPI: 1568428134

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Individual (NPI-1) Active

HADEEL AL-MARSUMI MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍2182 EAST ST, CONCORD, CA, 94520

📞 925-319-8978

NPI: 1285130096

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Individual (NPI-1) Active

MAY ALATTAR MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍8600 OLD GEORGETOWN RD, BETHESDA, MD, 20814

📞 301-896-3100

NPI: 1154523371

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Individual (NPI-1) Active

DIANA LUCIA ALBA M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍400 PARNASSUS AVE STE 550, SAN FRANCISCO, CA, 94143

📞 415-353-2350

NPI: 1144547456

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Individual (NPI-1) Active

DIANA TRISTAN ALBAY M.D

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍33 CREEK RD STE 130, IRVINE, CA, 92604

📞 949-769-3443

NPI: 1477751691

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Individual (NPI-1) Active

ZEINA ALI

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍265 N EL CIELO RD STE A101, PALM SPRINGS, CA, 92262

📞 760-320-8814

NPI: 1285976662

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Individual (NPI-1) Active

JAMIL BAWERJAN ALKHADDO MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍6185 PASEO DEL NORTE STE 100, CARLSBAD, CA, 92011

📞 760-940-7000

NPI: 1700966652

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Individual (NPI-1) Active

MIYA E ALLEN M.D.

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍1010 NUT TREE RD, VACAVILLE, CA, 95687

📞 707-624-7947

NPI: 1124285150

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Individual (NPI-1) Active

ROBERT G. ALLOO MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍162 HAMILTON CT, LOS ALTOS, CA, 94022

📞 650-941-1306

NPI: 1508943440

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Individual (NPI-1) Active

MOHAMAD KHALDOUN ALNABELSI MD

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍39000 BOB HOPE DR, RANCHO MIRAGE, CA, 92270

📞 760-773-5350

NPI: 1891786729

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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