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 / NY

JOHN TOMASZEWSKI, MD

PATHOLOGY

Medical school: PERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA

Graduated: 1977

NPI: 1417993601

Practice Locations (4)

UNIVERSITY AT BUFFALO PATHOLOGISTS INC

100 HIGH ST

BUFFALO, NY 142031126

7168595600

UNIVERSITY AT BUFFALO PATHOLOGISTS INC

462 GRIDER ST

BUFFALO, NY 142153021

7168983000

UNIVERSITY AT BUFFALO PATHOLOGISTS INC

115 FLINT RD

WILLIAMSVILLE, NY 142213058

7166267200

UNIVERSITY AT BUFFALO PATHOLOGISTS INC

1540 MAPLE RD

WILLIAMSVILLE, NY 142213647

7165683600

Source: CMS National Downloadable File, September 2026.

JOHN TOMASZEWSKI, MD | HealthCareAtlasUSA