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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 16–30 of 200 providers
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Individual (NPI-1) Active

CAMILLE ADEIMY MD

Internal Medicine, Hematology & Oncology

📍1100 SAN BERNARDINO RD, UPLAND, CA, 91786

📞 909-949-2242

NPI: 1477785160

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Individual (NPI-1) Active

DAVID H ADKINS MD

Internal Medicine, Hematology & Oncology

📍600 COFFEE RD, MODESTO, CA, 95355

📞 209-521-6097

NPI: 1104883644

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Individual (NPI-1) Active

KENT MARC-JOSEF ADLER M.D.

Internal Medicine, Hematology & Oncology

📍218 DE ANZA BLVD, SAN MATEO, CA, 94402

📞 650-341-9131

NPI: 1013074632

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Individual (NPI-1) Active

MARK J ADLER

Internal Medicine, Hematology & Oncology

📍910 SYCAMORE AVE, VISTA, CA, 92081

📞 760-598-1700

NPI: 1174552533

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Individual (NPI-1) Active

ADOUR RICHARD ADROUNY M.D.

Internal Medicine, Hematology & Oncology

📍2998 S BASCOM AVE, SAN JOSE, CA, 95124

📞 408-356-1911

NPI: 1447298955

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Organization (NPI-2) Active

ADVENTIST HEALTH CALIFORNIA MEDICAL GROUP, INC.

Internal Medicine, Hematology & Oncology

📍6 WOODLAND RD, SAINT HELENA, CA, 94574

📞 707-967-5721

NPI: 1548409675

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Organization (NPI-2) Active

ADVENTIST HEALTH CALIFORNIA MEDICAL GROUP, INC.

Internal Medicine

📍18990 COYOTE VALLEY RD, HIDDEN VALLEY LAKE, CA, 95467

📞 707-987-9024

NPI: 1699054650

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Organization (NPI-2) Active

ADVENTIST HEALTH CALIFORNIA MEDICAL GROUP, INC.

Internal Medicine, Hematology & Oncology

📍10 WOODLAND RD, SAINT HELENA, CA, 94574

📞 707-967-5721

NPI: 1811284631

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Organization (NPI-2) Active

ADVENTIST HEALTH PHYSICIANS NETWORK

Internal Medicine, Hematology & Oncology

📍111 RALEY BLVD STE 240, CHICO, CA, 95928

📞 530-332-1042

NPI: 1912465915

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Organization (NPI-2) Active

ADVENTIST HEALTH PHYSICIANS NETWORK

Clinic/Center, Multi-Specialty

📍18990 COYOTE VALLEY RD, HIDDEN VALLEY LAKE, CA, 95467

📞 707-963-5006

NPI: 1124325220

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Organization (NPI-2) Active

ADVENTIST HEALTH PHYSICIANS NETWORK

Internal Medicine, Hematology & Oncology

📍1687 ERRINGER RD, SIMI VALLEY, CA, 93065

📞 805-583-3006

NPI: 1629311543

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Organization (NPI-2) Active

ADVENTIST HEALTH PHYSICIANS NETWORK

Internal Medicine, Hematology & Oncology

📍425 HAALAND DR, THOUSAND OAKS, CA, 91361

📞 805-496-2949

NPI: 1841666534

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Organization (NPI-2) Active

ADVENTIST HEALTH PHYSICIANS NETWORK

Internal Medicine, Hematology & Oncology

📍95 DECLARATION DR STE 1, CHICO, CA, 95973

📞 530-332-1042

NPI: 1649736687

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Organization (NPI-2) Active

ADVENTIST HEALTH PHYSICIANS NETWORK

Physical Therapist

📍111 RALEY BLVD STE 140, CHICO, CA, 95928

📞 530-332-1042

NPI: 1396203451

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Organization (NPI-2) Active

ADVENTIST HEALTH PHYSICIANS NETWORK

Internal Medicine, Hematology & Oncology

📍2620 CHESTER AVE, BAKERSFIELD, CA, 93303

📞 661-323-4673

NPI: 1053791970

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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