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

MARK S PASTERNACK, MD

INFECTIOUS DISEASE

Medical school: HARVARD MEDICAL SCHOOL

Graduated: 1975

Also: INTERNAL MEDICINE

NPI: 1861458101

Practice Locations (3)

THE GENERAL HOSPITAL CORPORATION

55 FRUIT ST

BOSTON, MA 021142621

6177262000

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

55 FRUIT ST

BOSTON, MA 021142696

6177240287

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

1575 CAMBRIDGE ST

CAMBRIDGE, MA 021384308

6178764344

Source: CMS National Downloadable File, September 2026.