HealthCareAtlasUSA

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Doctors / IL

DAVID R ONSAGER, MD

CARDIAC SURGERY

Medical school: RUSH MEDICAL COLLEGE OF RUSH UNIVERSITY

Graduated: 1988

Also: THORACIC SURGERY

NPI: 1396829156

Practice Locations (5)

UNIVERSITY OF CHICAGO

5758 S MARYLAND AVE

CHICAGO, IL 606371426

7737023384

THE UNIVERSITY OF CHICAGO MEDICAL CENTER

5841 S MARYLAND AVE

CHICAGO, IL 606371443

7737021000

UNIVERSITY OF CHICAGO

5841 S MARYLAND AVE

CHICAGO, IL 606371443

8888240200

UNIVERSITY OF CHICAGO

950 E 61ST ST, RM 207

CHICAGO, IL 606372654

7737023095

ENDEAVOR HEALTH MEDICAL GROUP

2650 RIDGE AVE, SUITE 1155

EVANSTON, IL 602011700

8475701070

Source: CMS National Downloadable File, September 2026.

DAVID ONSAGER, MD | HealthCareAtlasUSA