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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 31–45 of 200 providers
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Individual (NPI-1) Active

ROBERT JOHN ALGAIER MD

Psychiatry & Neurology, Psychiatry

📍4441 E KINGS CANYON RD, FRESNO, CA, 93702

📞 559-600-9171

NPI: 1164496709

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Individual (NPI-1) Active

ASHRAF ALI M.D.

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍13090 CARNESI DR, RANCHO CUCAMONGA, CA, 91739

📞 214-629-3767

NPI: 1396906616

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Individual (NPI-1) Active

NARMIN ALIJI M.D.

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍100 WILSHIRE BLVD STE 700, SANTA MONICA, CA, 90401

📞 310-917-1012

NPI: 1811288822

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Individual (NPI-1) Active

JOSEPH ALIMASUYA M.D.

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍6777 N WILLOW AVE, FRESNO, CA, 93710

📞 559-681-2623

NPI: 1598768590

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Individual (NPI-1) Active

SIMON A ALLO

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍9479 HAVEN AVE, RANCHO CUCAMONGA, CA, 91730

📞 909-771-8023

NPI: 1780204214

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Individual (NPI-1) Active

DAVID E. ALLYN MD

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍441 N LAKEVIEW AVE, ANAHEIM, CA, 92807

📞 888-988-2800

NPI: 1952472987

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Individual (NPI-1) Active

AMADA ISABEL ALMASE M.D.

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍1400 BRISTOL ST N STE 250, NEWPORT BEACH, CA, 92660

📞 949-892-7242

NPI: 1194748582

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Individual (NPI-1) Active

JOANNE D. ALS MD

Psychiatry & Neurology, Child & Adolescent Psychiatry

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

📞 626-851-1011

NPI: 1780743369

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Individual (NPI-1) Active

MARK DAVID ALTER M.D.

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍2160 S 1ST AVE, MAYWOOD, IL, 60153

📞 708-216-9000

NPI: 1730263617

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Individual (NPI-1) Active

DENNIS BRIAN ALTERS MD

Psychiatry & Neurology, Psychiatry

📍650 N STATE ST, HEMET, CA, 92543

📞 951-791-3300

NPI: 1457371635

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Individual (NPI-1) Active

ADRIANA MARISOL ALVAREZ MD

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍11234 ANDERSON ST, LOMA LINDA, CA, 92354

📞 909-558-9532

NPI: 1023698925

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Individual (NPI-1) Active

BAHMAN AMADI M.D.

Psychiatry & Neurology, Psychiatry

📍4521 CAMPUS DR UNIT 444, IRVINE, CA, 92612

📞 714-793-7601

NPI: 1346660925

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Individual (NPI-1) Active

HAMID REZA AMANATKAR M.D.

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍2730 WILSHIRE BLVD STE 525, SANTA MONICA, CA, 90403

📞 323-298-3100

NPI: 1417399742

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Individual (NPI-1) Active

TERESITA M AMAY M.D.

Psychiatry & Neurology, Child & Adolescent Psychiatry

📍109 NW 2ND AVE, VISALIA, CA, 93291

📞 559-627-1490

NPI: 1265627947

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Individual (NPI-1) Active

ADRIAN JACQUES HALCYON AMBROSE M.D.

Psychiatry & Neurology, Psychiatry

📍900 S MAIN ST STE 209, CORONA, CA, 92882

📞 714-545-5550

NPI: 1528485679

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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