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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 1–15 of 200 providers
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Organization (NPI-2) Active

A. RAY MABAQUIAO M.D. APMC

Internal Medicine, Rheumatology

📍1745 S IMPERIAL AVE STE C, EL CENTRO, CA, 92243

📞 760-353-0488

NPI: 1861674376

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Individual (NPI-1) Active

KHURRAM ABBASS MD

Internal Medicine, Rheumatology

📍200 JOSE FIGUERES AVE STE 480, SAN JOSE, CA, 95116

📞 408-684-4104

NPI: 1154455178

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Individual (NPI-1) Active

MAI ABDELNABI MD

Internal Medicine, Rheumatology

📍1520 STOCKTON ST, SAN FRANCISCO, CA, 94133

📞 415-391-9686

NPI: 1013394980

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Individual (NPI-1) Active

BRIAN TADAYOSHI ABE MD, PhD

Internal Medicine, Rheumatology

📍300 PASTEUR DR RM 2225, STANFORD, CA, 94305

📞 650-723-7887

NPI: 1104262708

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Individual (NPI-1) Active

THOMAS ABEL MD

Internal Medicine, Rheumatology

📍15480 PALOS VERDES DRIVE, MONTE SERENO, CA, 95030

📞 408-656-9944

NPI: 1871679399

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Organization (NPI-2) Active

ABHISHEK BHARDWAJ, MD CORPORATION

Internal Medicine, Pulmonary Disease

📍9940 TALBERT AVE STE 101, FOUNTAIN VALLEY, CA, 92708

📞 714-545-8700

NPI: 1548134257

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Individual (NPI-1) Active

FERUZA ABRAAMYAN

Internal Medicine, Rheumatology

📍1 MEDICAL PLAZA DR, ROSEVILLE, CA, 95661

📞 916-781-1632

NPI: 1124769278

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Individual (NPI-1) Active

THOMAS CHARLES ADAMSON M.D.

Internal Medicine, Rheumatology

📍10670 WEXFORD ST, SAN DIEGO, CA, 92131

📞 858-621-4010

NPI: 1639187057

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Organization (NPI-2) Active

ADVENTIST HEALTH PHYSICIANS NETWORK

Internal Medicine, Rheumatology

📍470 GREENFIELD AVE, HANFORD, CA, 93230

📞 559-537-0425

NPI: 1457711442

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Organization (NPI-2) Active

AFFILIATES IN MEDICAL SPECIALTIES MEDICAL GRP. INC

Internal Medicine

📍7345 MED CTR DR, WEST HILLS, CA, 91307

📞 818-347-2921

NPI: 1730195447

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Individual (NPI-1) Active

SANA AFROZ MD

Internal Medicine, Rheumatology

📍26520 CACTUS AVE, MORENO VALLEY, CA, 92555

📞 951-486-4000

NPI: 1356724074

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Individual (NPI-1) Active

ISHITA AGGARWAL MD

Internal Medicine, Rheumatology

📍2100 WEBSTER ST STE 112, SAN FRANCISCO, CA, 94115

📞 415-923-3060

NPI: 1518385699

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Organization (NPI-2) Active

AGILENCE ARTHRITIS AND OSTEOPOROSIS MEDICAL CENTER, INC.

Internal Medicine, Rheumatology

📍12291 WASHINGTON BLVD, WHITTIER, CA, 90606

📞 562-945-7252

NPI: 1073649612

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Individual (NPI-1) Active

ATUL AGRAWAL MD

Internal Medicine, Rheumatology

📍5601 DEER VALLEY RD, ANTIOCH, CA, 94531

📞 925-813-6500

NPI: 1528146016

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Individual (NPI-1) Active

ALFREDO JAVIER AGUIRRE M.D.

Internal Medicine, Rheumatology

📍3181 SW SAM JACKSON PARK RD, PORTLAND, OR, 97239

📞 503-494-8637

NPI: 1184019267

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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