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

John Michael Janczakowski, MD

Individual provider Pediatrics Physician · NPI 1306862107

John Michael Janczakowski, MD is a Pediatrics Physician in Green Bay, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

Licensed in
WI
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

2793 Lineville Rd
Green Bay, WI 54313-7152
Phone: (920) 496-4700
Fax: (920) 272-1619
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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 36779 (WI)

Record details

NPI number1306862107
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 14, 2006
Last updated in NPPESJuly 24, 2008

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