Medical School - Seoul National University, 1978
Residency - ID - Seoul National University, 1983
Residency - ID - Boston Medical Center, 1989
Post Doctorate - Civil Hospital, 1981
Post Doctorate - Civil Hospital, 1984
Post Doctorate - Civil Hospital, 1985
Post Doctorate - Civil Hospital, 1986
Post Doctorate - Civil Hospital, 1991
Post Doctorate - Wadsworth Veterans Administration, 2001