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

Dr. John S Weitzner, MD

Individual provider Specialist · NPI 1023175833

Dr. John S Weitzner, MD is a Specialist in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2007
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

1725 W Harrison St Ste 838
Chicago, IL 60612-3841
Phone: (312) 421-2010
Fax: (312) 942-2233
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X (IL)

Record details

NPI number1023175833
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 2, 2007
Last updated in NPPESJuly 8, 2007
Mailing address1725 W Harrison St, Suite 838, Chicago, IL 60612-3841

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