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

John Krzan, MD

Individual provider Pediatrics Physician · NPI 1821035593

John Krzan, MD is a Pediatrics Physician in Hamburg, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
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

4390 Quinby Dr Ste E
Hamburg, NY 14075-7900
Phone: (716) 312-7400
Fax: (716) 312-7402
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 171487-1 (NY)

Record details

NPI number1821035593
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 1, 2006
Last updated in NPPESJuly 8, 2007
Mailing address4390 Quinby Dr, Suite E, Hamburg, NY 14075-7900

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