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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 151–165 of 200 providers
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Individual (NPI-1) Active

HAYDEN M BURKE M.D.

Internal Medicine, Infectious Disease

📍1848 FREDA LN, CARDIFF BY THE SEA, CA, 92007

📞 760-815-9425

NPI: 1902154420

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Individual (NPI-1) Active

DAVID F BUSCH M.D.

Internal Medicine, Infectious Disease

📍2100 WEBSTER ST, SAN FRANCISCO, CA, 94115

📞 415-923-3883

NPI: 1942343975

👨‍⚕️
Individual (NPI-1) Active

MICHAEL LAWRENCE BUTERA M.D.

Internal Medicine, Infectious Disease

📍6699 ALVARADO RD STE 2309, SAN DIEGO, CA, 92120

📞 619-286-8803

NPI: 1104925205

👨‍⚕️
Individual (NPI-1) Active

DAVID M BUTLER MD

Internal Medicine

📍1233 E 2ND ST, CASPER, WY, 82601

📞 800-822-7201

NPI: 1699861518

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Individual (NPI-1) Active

RACHEL BYSTRITSKY

Internal Medicine, Infectious Disease

📍400 PARNASSUS AVE FL 2, SAN FRANCISCO, CA, 94143

📞 415-353-2626

NPI: 1194081984

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Individual (NPI-1) Active

RAYMOND BYUN

Internal Medicine, Infectious Disease

📍10535 HOSPITAL WAY, MATHER, CA, 95655

📞 916-843-7031

NPI: 1578545950

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Individual (NPI-1) Active

ANTONIO E. CABINIAN M.D.

Internal Medicine, Infectious Disease

📍655 EUCLID AVE, NATIONAL CITY, CA, 91950

📞 619-470-7000

NPI: 1275720294

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Individual (NPI-1) Active

DOUGLAS CHARLES CABLE MD

Internal Medicine, Infectious Disease

📍320 SUPERIOR AVE #290, NEWPORT BEACH, CA, 92663

📞 949-574-2628

NPI: 1861406324

👨‍⚕️
Individual (NPI-1) Active

EDWARD RAFAEL CACHAY M.D.

Internal Medicine, Infectious Disease

📍13400 E SHEA BLVD, SCOTTSDALE, AZ, 85259

📞 480-301-8000

NPI: 1336290071

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Individual (NPI-1) Active

JOSEPH JOHN CADDEN M.D.

Internal Medicine, Infectious Disease

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

📞 323-226-7504

NPI: 1881640399

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Individual (NPI-1) Active

JUAN PABLO CAEIRO M.D.

Internal Medicine, Infectious Disease

📍2040 CAMFIELD AVE, COMMERCE, CA, 90040

📞 323-869-5448

NPI: 1801951645

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Individual (NPI-1) Active

DEVIN T CALLISTER M.D.

Internal Medicine, Infectious Disease

📍365 LENNON LN, WALNUT CREEK, CA, 94598

📞 925-947-2334

NPI: 1376856757

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Individual (NPI-1) Active

HELENE MARGARET CALVET M.D.

Internal Medicine, Infectious Disease

📍405 W 5TH ST, SANTA ANA, CA, 92701

📞 714-834-5518

NPI: 1760604516

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Individual (NPI-1) Active

MARY CATHERINE CAMBOU M.D.

Internal Medicine, Infectious Disease

📍1399 ROXBURY DR STE 100, LOS ANGELES, CA, 90035

📞 310-557-2273

NPI: 1174901219

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Individual (NPI-1) Active

GREGORY SCOTT CANFIELD M.D., Ph.D.

Internal Medicine, Infectious Disease

📍1428 PHILLIPS LN STE 203, SAN LUIS OBISPO, CA, 93401

📞 805-543-4407

NPI: 1144632159

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🗺 Cities in California

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📊 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