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Healthcare Providers in California

Find doctors, hospitals, and clinics in California from the official NPPES NPI Registry. We found 108 providers in this listing.

108 Providers Found Data from NPPES NPI Registry Updated 2026
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All Providers Doctors Hospitals & Clinics
Showing 46–60 of 108 providers
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Organization (NPI-2) Active

JOSEPH J PINZONE M D INC

Clinic/Center, Oncology, Radiation

📍16300 SAND CANYON AVE STE 711, IRVINE, CA, 92618

📞 888-580-5900

NPI: 1023596574

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Organization (NPI-2) Active

JUSTIN QUOCK, M.D., INC.

Clinic/Center, Primary Care

📍929 CLAY ST, SAN FRANCISCO, CA, 94108

📞 415-398-5100

NPI: 1255647251

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Organization (NPI-2) Active

KAISER FOUNDATION HOSPITALS

Clinic/Center, Oncology

📍6041 CADILLAC AVE STE 420, LOS ANGELES, CA, 90034

📞 323-857-2000

NPI: 1992418479

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Organization (NPI-2) Active

KAISER PERMANENTE

Clinic/Center, Oncology

📍275 HOSPITAL PKWY, SAN JOSE, CA, 95119

📞 408-972-7000

NPI: 1629528880

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Organization (NPI-2) Active

KALPATHY V. VENKATESAN, M.D., INC.

Clinic/Center, Oncology

📍365 PEARSON DR, PORTERVILLE, CA, 93257

📞 559-788-2175

NPI: 1780908509

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Organization (NPI-2) Active

KAWEAH DELTA HEALTH CARE DISTRICT

Clinic/Center, Oncology

📍4945 W CYPRESS AVE, VISALIA, CA, 93277

📞 559-624-3000

NPI: 1003672460

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Organization (NPI-2) Active

KAWEAH DELTA HEALTH CARE DISTRICT

Clinic/Center, Oncology

📍857 GARNER AVE, HANFORD, CA, 93230

📞 555-584-6000

NPI: 1437915808

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Organization (NPI-2) Active

KHOSROW MAHDAVI, M.D., INC

Clinic/Center, Oncology

📍4000 W COAST HWY, NEWPORT BEACH, CA, 92663

📞 949-642-8566

NPI: 1124229554

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Organization (NPI-2) Active

LA JOLLA RADIOLOGY MEDICAL GROUP THERAPY, INC

Clinic/Center, Oncology, Radiation

📍9888 GENESEE AVE, LA JOLLA, CA, 92037

📞 760-599-9545

NPI: 1023185428

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Organization (NPI-2) Active

MERCED FACULTY ASSOCIATES MEDICAL GROUP INCORPORATED

Clinic/Center, Oncology

📍3365 G ST, MERCED, CA, 95340

📞 209-726-3410

NPI: 1538300660

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Organization (NPI-2) Active

MONTEREY BAY ONCOLOGY A MEDICAL CORPORATION

Internal Medicine, Hematology & Oncology

📍5 HARRIS CT, BLDG T, STE. 201, MONTEREY, CA, 93940

📞 831-375-4105

NPI: 1972542959

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Organization (NPI-2) Active

NADER JAVADI MD A PROFESSIONAL COPORATION

Pharmacist, Oncology

📍24100 CALABASAS RD, CALABASAS, CA, 91302

📞 818-578-6454

NPI: 1902283237

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Organization (NPI-2) Active

NEWBURYPORT, MA RADIATION CENTER LLC

Clinic/Center, Oncology, Radiation

📍1 WALLACE BASHAW WAY STE 1001, NEWBURYPORT, MA, 01950

📞 978-997-1351

NPI: 1861083438

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Organization (NPI-2) Active

NEWBURYPORT, MA RADIATION CENTER, LLC

Clinic/Center, Oncology, Radiation

📍1 WALLACE BASHAW JR WAY STE 1001, NEWBURYPORT, MA, 01950

📞 978-997-1351

NPI: 1689116956

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Organization (NPI-2) Active

NORTHERN ARIZONA ONCOLOGY CENTERS LLC

Clinic/Center, Oncology, Radiation

📍1100 GAIL GARDNER WAY, PRESCOTT, AZ, 86305

📞 928-776-1040

NPI: 1841503885

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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 108
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