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

ROY C GREKIN, MD

DERMATOLOGY

Medical school: UNIVERSITY OF MICHIGAN MEDICAL SCHOOL

Graduated: 1977

NPI: 1245278506

Practice Locations (2)

UNIVERSITY OF CALIFORNIA SAN FRANCISCO

1701 DIVISADERO ST

SAN FRANCISCO, CA 941153011

4154761000

UNIVERSITY OF CALIFORNIA SAN FRANCISCO

2330 POST ST

SAN FRANCISCO, CA 941153465

4154764029

Source: CMS National Downloadable File, September 2026.

ROY GREKIN, MD | HealthCareAtlasUSA