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

GREGORY Y WARNER, DO

INFECTIOUS DISEASE

Graduated: 2005

Offers telehealth

NPI: 1073704326

Practice Locations (2)

NORTHBAY HEALTH MEDICAL FOUNDATION

1860 PENNSYLVANIA AVE

FAIRFIELD, CA 945333590

7076464114

NORTHBAY PHYSICIANS SURGERY CENTER, LLC

1010 NUT TREE RD, 100 WOUND CARE

VACAVILLE, CA 956874181

7076247979

Source: CMS National Downloadable File, September 2026.

GREGORY WARNER, DO | HealthCareAtlasUSA