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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 46–60 of 200 providers
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Individual (NPI-1) Active

KAMYAR AFSHAR D.O.

Internal Medicine, Critical Care Medicine

📍200 W ARBOR DR, SAN DIEGO, CA, 92103

📞 800-926-8273

NPI: 1407050669

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Individual (NPI-1) Active

WAQAS AFTAB M.D.

Internal Medicine, Critical Care Medicine

📍1600 N ROSE AVE, OXNARD, CA, 93030

📞 000-000-0000

NPI: 1043414220

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Individual (NPI-1) Active

MUHAMMAD AFZAL M.D.

Internal Medicine, Critical Care Medicine

📍1508 ALHAMBRA BLVD STE 200, SACRAMENTO, CA, 95816

📞 916-325-1040

NPI: 1689600553

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Individual (NPI-1) Active

CARMENCITA AGCAOILI M.D.

Internal Medicine, Critical Care Medicine

📍2000 MOWRY AVE, FREMONT, CA, 94538

📞 510-797-1111

NPI: 1285652396

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Individual (NPI-1) Active

RAVI KUMAR AGGU SHER MD

Internal Medicine, Critical Care Medicine

📍2425 SAMARITAN DR, SAN JOSE, CA, 95124

📞 408-559-2011

NPI: 1285898585

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Individual (NPI-1) Active

TERRA AGHA PA-C

Internal Medicine, Critical Care Medicine

📍3500 GASTON AVE, DALLAS, TX, 75246

📞 214-820-0111

NPI: 1154874568

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Individual (NPI-1) Active

NEEMA MOHAMMAD AGHAMOHAMMADI D.O.

Internal Medicine, Critical Care Medicine

📍3637 MISSION AVE, CARMICHAEL, CA, 95608

📞 916-679-3524

NPI: 1831144732

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Individual (NPI-1) Active

SHAWN AGHILI M.D.

Internal Medicine, Critical Care Medicine

📍5 MEDICAL PLAZA DR, ROSEVILLE, CA, 95661

📞 916-786-7498

NPI: 1871531590

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Individual (NPI-1) Active

ASHISH TULSIDAS AGRAWAL M.D.

Internal Medicine, Pulmonary Disease

📍5555 GROSSMONT CENTER DR, LA MESA, CA, 91942

📞 888-664-8297

NPI: 1225136484

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Individual (NPI-1) Active

VLADIMIR AGUILAR ACNPC-AG

Nurse Practitioner, Critical Care Medicine

📍9961 SIERRA AVE, FONTANA, CA, 92335

📞 951-452-3202

NPI: 1093475543

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Individual (NPI-1) Active

SCOTT MICHAEL AHLBRAND M.D.

Anesthesiology, Critical Care Medicine

📍300 PASTEUR DR, STANFORD, CA, 94305

📞 650-723-7377

NPI: 1871789354

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Individual (NPI-1) Active

AJIT SINGH AHLUWALIA MD, MHA

Hospitalist

📍26800 CROWN VALLEY PKWY STE 315, MISSION VIEJO, CA, 92691

📞 949-364-6000

NPI: 1548465156

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Individual (NPI-1) Active

KAREEM IRSHAD SHAIKH AHMAD M.D.

Internal Medicine, Pulmonary Disease

📍14120 BEACH BLVD STE 101, WESTMINSTER, CA, 92683

📞 949-795-6022

NPI: 1215220942

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Individual (NPI-1) Active

MASOOD AHMAD M.D.

Internal Medicine, Critical Care Medicine

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

📞 951-781-3672

NPI: 1073069332

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Individual (NPI-1) Active

TAMANA AHMADI

Internal Medicine, Pulmonary Disease

📍100 MOODY CT STE 200&110, THOUSAND OAKS, CA, 91360

📞 805-418-3500

NPI: 1427437730

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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