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

STEPHEN DIEFENDERFER, PA

PHYSICIAN ASSISTANT

Graduated: 2024

NPI: 1497488704

Practice Locations (1)

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

55 FRUIT ST

BOSTON, MA 021142696

6177240287

Source: CMS National Downloadable File, September 2026.

STEPHEN DIEFENDERFER, PA | HealthCareAtlasUSA