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 / MA

MARVIN RYOU, MD

GASTROENTEROLOGY

Medical school: HARVARD MEDICAL SCHOOL

Graduated: 2003

Offers telehealth

NPI: 1821104787

Practice Locations (2)

BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC

75 FRANCIS ST

BOSTON, MA 021156110

6177325500

EMERSON PRACTICE ASSOCIATES, INC

131 OLD RD TO 9 ACRE COR

CONCORD, MA 01742

9782873835

Source: CMS National Downloadable File, September 2026.