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 B GARREN, MD

INTERNAL MEDICINE

Medical school: HARVARD MEDICAL SCHOOL

Graduated: 1966

Also: HEMATOLOGY/ONCOLOGY

NPI: 1720152663

Practice Locations (1)

MONTEREY BAY ONCOLOGY A MEDICAL CORPORATION

5 HARRIS CT, SUITE 201

MONTEREY, CA 939405750

8313754105

Source: CMS National Downloadable File, September 2026.

RONALD GARREN, MD | HealthCareAtlasUSA