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

John J Krolewski, MD

Individual provider Molecular Genetic Pathology (Pathology) Physician · NPI 1407936610

John J Krolewski, MD is a Molecular Genetic Pathology (Pathology) Physician in Rochester, New York. Licensed in New York. Registered with an NPI since 2006.

Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1393 Clover St
Rochester, NY 14610-3312
Phone: (949) 872-9107
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Molecular Genetic Pathology (Pathology) Physician (primary) Taxonomy 207ZP0007X · Licence 163192 (NY)

Record details

NPI number1407936610
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 16, 2006
Last updated in NPPESMay 14, 2021
Certification dateMay 14, 2021