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

LEON M PTASZEK

CARDIAC ELECTROPHYSIOLOGY

Medical school: ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI

Graduated: 2003

Also: CARDIOVASCULAR DISEASE (CARDIOLOGY), INTERNAL MEDICINE

Offers telehealth

NPI: 1841277175

Practice Locations (5)

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

55 FRUIT ST

BOSTON, MA 021142696

6177240287

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

151 EVERETT AVE

CHELSEA, MA 021501812

6178848300

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

102 ENDICOTT ST, MGH NORTH SHORE MEDICAL

DANVERS, MA 019233623

9788826100

MASSACHUSETTS GENERAL PHYSICIANS ORGANIZATION INC

57 PROSPECT ST

NANTUCKET, MA 025542799

5088258100

MASS GENERAL BRIGHAM MEDICAL GROUP SUBURBAN MASSACHUSETTS INC

2014 WASHINGTON ST

NEWTON, MA 024621607

6172436000

Source: CMS National Downloadable File, September 2026.

LEON PTASZEK | HealthCareAtlasUSA