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

JOSEPH AHN, MD

GASTROENTEROLOGY

Medical school: NORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL

Graduated: 2000

NPI: 1497770416

Practice Locations (6)

ENDEAVOR HEALTH MEDICAL GROUP

1000 CENTRAL ST

EVANSTON, IL 602011779

ENDEAVOR HEALTH MEDICAL GROUP

1000 CENTRAL ST

EVANSTON, IL 602011780

ENDEAVOR HEALTH MEDICAL GROUP

2650 RIDGE AVE

EVANSTON, IL 602011700

ENDEAVOR HEALTH MEDICAL GROUP

2100 PFINGSTEN RD

GLENVIEW, IL 600261301

ENDEAVOR HEALTH MEDICAL GROUP

777 PARK AVE W

HIGHLAND PARK, IL 600352433

ENDEAVOR HEALTH MEDICAL GROUP

9600 GROSS POINT RD

SKOKIE, IL 600761214

Source: CMS National Downloadable File, September 2026.

JOSEPH AHN, MD | HealthCareAtlasUSA