HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / CA

RONALD R MATUSZAK, MD

HOSPITALIST

Graduated: 2011

Also: INTERNAL MEDICINE

NPI: 1932496791

Practice Locations (3)

SUTTER BAY MEDICAL FOUNDATION

2000 MOWRY AVE

FREMONT, CA 945381716

5107977111

SUTTER BAY MEDICAL FOUNDATION

3200 KEARNEY ST

FREMONT, CA 945382299

5104901222

SUTTER BAY MEDICAL FOUNDATION

5555 W LAS POSITAS BLVD

PLEASANTON, CA 945884000

9253734068

Source: CMS National Downloadable File, September 2026.

RONALD MATUSZAK, MD | HealthCareAtlasUSA