Seoul National University, Medical School (1985-1989)
Seoul National University Hospital Cardiothoracic Residency (1990-1994)
Sejong General Hospital (1998-2001)
Chairman, Cardiothoracic surgery , Ilsan paik Hospital(2003-2006 )
Associate professor, Cardiac surgeon, Samsung medical center, Sungkyunkwan university(2006-)
aorta surgery
valve replacement and repair
ischemic heart disease