Hanyang medical school (M.D. 1984)
Korea National Medical Center C-V Surgery residency (1985-1989)
Korean Thoracic & C-V surgery board (1989)
Korean Army Hospital as a staff (1990-1992)
Yonsei Cardiovascular Center Fellow (1992-1994.2)
Yonsei University Medical school instructor (1994)
Korea National Medical Center C-V Surgery staff doctor(1994-2000.3.2)
National Heath Insurance Medical Center(2000.3.2-
international fellowship in UAB(1997-1998)
Coronary artery bypass surgery including MIDCAB
Surgery for Aorta dissection
Homograft
Transplantaton
Arrhythmia surgery(Maze III)