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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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Individual (NPI-1) Active

VIVIEN ABAD M.D.

Psychiatry & Neurology, Sleep Medicine

📍2690 HANOVER STREET, PALO ALTO, CA, 94304

📞 650-721-7557

NPI: 1861588030

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Individual (NPI-1) Active

KHADER K ABOUNASR MD

Internal Medicine, Pulmonary Disease

📍8330 RED OAK ST, RANCHO CUCAMONGA, CA, 91730

📞 909-987-2528

NPI: 1780884015

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Individual (NPI-1) Active

CHARLIE ABRAHAM MD

Internal Medicine, Sleep Medicine

📍155 N FRESNO ST, FRESNO, CA, 93701

📞 559-459-5713

NPI: 1588841043

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Individual (NPI-1) Active

GREGORY T. ACKROYD M.D.

Psychiatry & Neurology, Sleep Medicine

📍585 W COLLEGE AVE, SANTA ROSA, CA, 95401

📞 707-525-9616

NPI: 1538192984

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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

ZACHARY ALEXIS ADAMS M.D.

Family Medicine, Sleep Medicine

📍3650 MANSELL RD STE 100, ALPHARETTA, GA, 30022

📞 678-990-3962

NPI: 1073956231

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Individual (NPI-1) Active

OLUFEMI MICHAEL ADENUGA M.D, MPH

Internal Medicine, Pulmonary Disease

📍1011 BALDWIN PARK BLVD, BALDWIN PARK, CA, 91706

📞 626-851-5400

NPI: 1134389125

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Individual (NPI-1) Active

JOYCE ADESINA M.D.

Internal Medicine, Sleep Medicine

📍1520 SAN PABLO ST STE 1000, LOS ANGELES, CA, 90033

📞 323-442-5100

NPI: 1922368745

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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

MUSHTAQ AHMED MD

Internal Medicine, Pulmonary Disease

📍5801 TRUXTUN AVE, BAKERSFIELD, CA, 93309

📞 661-327-3747

NPI: 1033137591

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Individual (NPI-1) Active

DANIEL AHOUBIM M.D.

Psychiatry & Neurology, Neurology

📍18370 BURBANK BLVD STE 414, TARZANA, CA, 91356

📞 818-877-7715

NPI: 1740415686

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Individual (NPI-1) Active

FATIMA AJAZ M.D

Internal Medicine, Pulmonary Disease

📍845 W LA VETA AVE STE 108, ORANGE, CA, 92868

📞 714-639-2600

NPI: 1477731461

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Individual (NPI-1) Active

KATHREEN AL RAMO

Internal Medicine, Sleep Medicine

📍6733 N WILLOW AVE STE 107, FRESNO, CA, 93710

📞 559-435-4700

NPI: 1396208443

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Individual (NPI-1) Active

SHAHID DAWOOD ALI M.D.

Family Medicine, Sleep Medicine

📍2315 STOCKTON BLVD, SACRAMENTO, CA, 95817

📞 916-734-3564

NPI: 1477792109

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Individual (NPI-1) Active

EYAD ALMASRI M.D.

Internal Medicine, Pulmonary Disease

📍6733 N WILLOW AVE STE 107, FRESNO, CA, 93710

📞 559-435-4700

NPI: 1992840490

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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