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 S ARENT, MD

INTERNAL MEDICINE

Medical school: UNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE

Graduated: 1995

NPI: 1245314210

Practice Locations (2)

PERMANENTE MEDICAL GROUP INC

99 MONTECILLO RD

SAN RAFAEL, CA 949033308

4154442000

PERMANENTE MEDICAL GROUP INC

975 SERENO DR

VALLEJO, CA 945892441

7076511000

Source: CMS National Downloadable File, September 2026.

GREGORY ARENT, MD | HealthCareAtlasUSA