HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / IL

GREGORY S RETZINGER

PATHOLOGY

Medical school: UNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE

Graduated: 1983

NPI: 1053334755

Practice Locations (5)

NORTHWESTERN MEDICAL FACULTY FOUNDATION

251 E HURON

CHICAGO, IL 606112908

NORTHWESTERN MEDICAL FACULTY FOUNDATION

251 E HURON ST

CHICAGO, IL 606112908

NORTHWESTERN MEDICAL FACULTY FOUNDATION

675 N SAINT CLAIR ST

CHICAGO, IL 606115975

NORTHWESTERN MEDICAL FACULTY FOUNDATION

675 N ST CLAIR

CHICAGO, IL 606115975

NORTHWESTERN MEDICAL FACULTY FOUNDATION

15300 W AVE

ORLAND PARK, IL 604624600

Source: CMS National Downloadable File, September 2026.