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

RYAN R GUINNESS, MD

INTERNAL MEDICINE

Medical school: GEISEL SCHOOL OF MEDICINE AT DARTMOUTH

Graduated: 2015

NPI: 1871987131

Practice Locations (1)

PERMANENTE MEDICAL GROUP INC

2238 GEARY BLVD

SAN FRANCISCO, CA 941153416

4158332200

Source: CMS National Downloadable File, September 2026.

RYAN GUINNESS, MD | HealthCareAtlasUSA