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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 181–195 of 200 providers
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Individual (NPI-1) Active

RIGO ISIDRO ACEVEDO

Internal Medicine

📍4150 V ST # 1100, SACRAMENTO, CA, 95817

📞 916-734-2737

NPI: 1225616006

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Individual (NPI-1) Active

PEDRO ACEVES-CASILLAS M.D.

Internal Medicine

📍2250 HAYES ST, SAN FRANCISCO, CA, 94117

📞 415-750-5995

NPI: 1144252396

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Individual (NPI-1) Active

NATALIE ACHAMALLAH M.D.

Internal Medicine, Critical Care Medicine

📍8700 BEVERLY BLVD RM 6729, WEST HOLLYWOOD, CA, 90048

📞 310-423-1838

NPI: 1255881546

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Individual (NPI-1) Active

LATHA MADHAVI ACHANTA MD MPH

Internal Medicine

📍2105 FOOTHILL BLVD STE B262, LA VERNE, CA, 91750

📞 909-901-3087

NPI: 1285893966

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Individual (NPI-1) Active

JAISHREE ACHARYA M.D.

Internal Medicine

📍3553 WHIPPLE RD, UNION CITY, CA, 94587

📞 510-454-1000

NPI: 1053334920

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Individual (NPI-1) Active

MALATHI ACHARYA M.D.

Integrative Medicine

📍130 PORTOLA RD STE F, PORTOLA VALLEY, CA, 94028

📞 650-671-2023

NPI: 1871671453

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Individual (NPI-1) Active

JACK ACKERMAN DO

Internal Medicine

📍227 N JACKSON AVE, SAN JOSE, CA, 95116

📞 408-347-2002

NPI: 1780794107

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Individual (NPI-1) Active

KENNETH V. ACKERMAN MD

Internal Medicine

📍13652 CANTARA ST, PANORAMA CITY, CA, 91402

📞 818-375-2000

NPI: 1568521185

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Individual (NPI-1) Active

MARK THOMAS ACKERMAN MD

Internal Medicine

📍221 WESTWOOD PLZ, LOS ANGELES, CA, 90095

📞 310-794-5555

NPI: 1144225046

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Individual (NPI-1) Active

AMOS C ACOFF M.D.

Internal Medicine

📍1401 S GRAND AVE, LOS ANGELES, CA, 90015

📞 818-838-4587

NPI: 1386687051

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Individual (NPI-1) Active

LINA ACOPIANS DO

Hospitalist

📍100 W CALIFORNIA BLVD, PASADENA, CA, 91105

📞 626-397-5000

NPI: 1548821523

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Individual (NPI-1) Active

DANIELLE ACOSTA

Internal Medicine

📍751 S BASCOM AVE, DEPT OF MEDICINE, 4TH FL, SAN JOSE, CA, 95128

📞 408-885-6305

NPI: 1063738110

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Individual (NPI-1) Active

JENNIFER ACOSTAMADIEDO MD

Internal Medicine, Sleep Medicine

📍1665 DOMINICAN WAY STE 222, SANTA CRUZ, CA, 95065

📞 844-387-5337

NPI: 1417479288

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Individual (NPI-1) Active

WALTER P. ACUNA MD

Internal Medicine

📍275 W MACARTHUR BLVD, OAKLAND, CA, 94611

📞 510-752-1000

NPI: 1972655108

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Individual (NPI-1) Active

MARIE ADACHI

Internal Medicine, Geriatric Medicine

📍200 UCLA MEDICAL PLZ STE 365A, LOS ANGELES, CA, 90095

📞 310-206-8272

NPI: 1629496740

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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