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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

EMAD M ABUHAMDA MD

Internal Medicine, Gastroenterology

📍6354 WALKER LN STE 400, ALEXANDRIA, VA, 22310

📞 571-472-7320

NPI: 1649228099

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Individual (NPI-1) Active

RONALD N. ADAMANY M.D.

Internal Medicine, Gastroenterology

📍27871 MEDICAL CENTER RD, MISSION VIEJO, CA, 92691

📞 949-364-5090

NPI: 1992780688

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Individual (NPI-1) Active

MILES FRANKLIN ADLER M.D.

Internal Medicine, Gastroenterology

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

📞 510-357-8180

NPI: 1760414502

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Individual (NPI-1) Active

RONALD ADLER MD

Internal Medicine, Gastroenterology

📍1411 E 31ST STREET, OAKLAND, CA, 94602

📞 510-437-4323

NPI: 1134206162

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Individual (NPI-1) Active

RASHMI R ADVANI M.D.

Internal Medicine, Gastroenterology

📍8700 BEVERLY BLVD STE A1150, WEST HOLLYWOOD, CA, 90048

📞 310-423-6082

NPI: 1902253958

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Individual (NPI-1) Active

PARVIZ D. AFSHANI M.D.

Internal Medicine, Gastroenterology

📍1301 20TH ST, SANTA MONICA, CA, 90404

📞 310-829-6789

NPI: 1083693766

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Individual (NPI-1) Active

PAYAM AFSHAR M.D.

Internal Medicine, Gastroenterology

📍8860 CENTER DR STE 420, LA MESA, CA, 91942

📞 619-469-5400

NPI: 1023192861

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Individual (NPI-1) Active

NIKHIL AGARWAL M.D.

Internal Medicine, Gastroenterology

📍2340 CLAY ST, SAN FRANCISCO, CA, 94115

📞 415-600-3458

NPI: 1487831145

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Individual (NPI-1) Active

VIJAY P. AGARWAL M.D.

Internal Medicine, Gastroenterology

📍1330 N INDIAN CANYON DR STE F, PALM SPRINGS, CA, 92262

📞 505-766-5471

NPI: 1609964154

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Individual (NPI-1) Active

MARIA AGUILAR

Internal Medicine, Gastroenterology

📍4150 V ST STE 3500, SACRAMENTO, CA, 95817

📞 916-734-2786

NPI: 1265701494

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Individual (NPI-1) Active

THOMAS VINCENT AGUIRRE M.D.

Internal Medicine, Gastroenterology

📍2403 CASTILLO ST, SANTA BARBARA, CA, 93105

📞 805-682-3585

NPI: 1285772004

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Individual (NPI-1) Active

MIRASOL AGUSTIN

Registered Nurse, Gastroenterology

📍1983 MARENGO ST, LOS ANGELES, CA, 90033

📞 323-409-5530

NPI: 1073036695

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Individual (NPI-1) Active

HRAIR STEVEN AHARONIAN M.D.

Internal Medicine, Gastroenterology

📍10606 MELVIN AVE, NORTHRIDGE, CA, 91326

📞 818-368-2166

NPI: 1174771034

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Individual (NPI-1) Active

WASEEM AHMAD M.D.

Internal Medicine, Gastroenterology

📍1701 DIVISADERO ST RM 120, SAN FRANCISCO, CA, 94115

📞 415-502-4444

NPI: 1649633991

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Individual (NPI-1) Active

AIJAZ AHMED MD

Internal Medicine, Gastroenterology

📍300 PASTEUR DR, STANFORD, CA, 94305

📞 650-723-4000

NPI: 1447351747

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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