-MD, PhD
-Professor, Medical Oncology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University
-Associate Professor, Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
-Secretary of Hapatobiliary & Pancreatic Cancer Committee of KCSG KCSG
-Director of Cancer Center, CHA Bundang Medical Center, Seongnam, Korea