Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John E Tomaszewski, MD

Individual provider Anatomic Pathology Physician · NPI 1417993601

John E Tomaszewski, MD is a Pathology in Buffalo, New York. Graduated from Perelman School of Med at the University of Pennsylvania in 1977, 49 years ago. Practices with University at Buffalo Pathologists Inc, a 23-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
49
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
PA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

100 High St
Buffalo, NY 14203-1126
Phone: (716) 859-5600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology Physician (primary) Taxonomy 207ZP0101X · Licence MD020859 (PA)

Record details

NPI number1417993601
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 22, 2006
Last updated in NPPESOctober 10, 2011
Mailing address100 High St, Buffalo, NY 14203-1126

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPATHOLOGY
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 1977 (49 years in practice)
Group practice University At Buffalo Pathologists Inc — 23 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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