한국국제의료협회

1969.3-1973.2: M.D., Seoul National University School of Medicine, Seoul, Korea 

1982.3-1986.7: Ph.D., Seoul National University School of Medicine, Seoul, Korea 

1973.3-1974.2: Internship, Seoul National University Hospital, Seoul, Korea 

1974.3-1978.2: Residency of Surgery, Seoul National University Hospital, Seoul, Korea 

1986.7-1987.8: Fellowship, Lahey Clinic & New England Deaconess Hospital, Boston, USA 

1987.9-1987.11: Clinical Observer of HepatoBiliaryPancreatic Surgery : National Cancer Center, Tokyo, Japan 

1992.3-1992.4:Clinical Observer of Liver Transplantation : Medizinische Hochschule Hannover, Hannover, Germany 

1978.5-1983.7: Chief Surgeon, Shin Young Surgical Hospital, Seoul, Korea 

1983.8-1989.2: Instructor, Assistant Professor, Associate Professor, Department of Surgery, Korea University Medical School, Seoul, Korea 

1989.3-1996.5: Associate Professor, Professor, Department of Surgery, Chief of Division of HepatoBiliary-Pancreatic Surgery, Asan Medical Center, Ulsan University Medical School, Seoul, Korea 

1996.6-2002.8: Professor and Chairman, Department of Surgery, Chief of Division of Hepato-Biliary Surgery and Liver Transplantation, Asan Medical Center, Ulsan University Medical School 

2002.9∼2012: Professor, Director of Organ Transplantation, Department of Surgery, Chief of Division of Hepato-Biliary Surgery and Liver Transplantation, Asan Medical Center, Ulsan University Medical School 

2011.3-2014.2: Director of Liver Center, Asan Medical Center 

1994.4-2014.2: Professor of Surgery, Chief of Hepato-Biliary Surgery and Liver Transplantation, Asan Medical Center, Ulsan University Medical School 

2013.10-: Honorary Professor, Health Sciences University Mongolia, Ulaanbaatar, Mongolia 

2014.2-: Honorary Professor, National Central Hospital of Mongolia, Ulaanbaatar, Mongolia 

2014.3-: Chair Professor of Surgery, Asan Medical Center, Ulsan University Medical School 

2015.1-2020.12: President & CEO, Asan Healthcare System 

2017.6-: Honorary Professor, Nanjing Medical School, Nanjing, China