- Gangnam St. Mary's Hospital Cho, Associate Professor
- Exchange Professor, Albert Einstein Human Research Institute, USA
- Associate Professor, Professor, Uijeongbu St. Mary's Hospital
- Director of the Liver Center at Catholic Kwandong University International St. Mary's Hospital
- Department of Hepatobiliary Pancreatology, Catholic Kwandong University International St. Mary's Hospital
- Medical professor at Catholic Kwandong University International St. Mary's Hospital
- Korea Liver Foundation Lee Sa-hyeon
- Advisory member of the Korean Association for the Study of the Liver
- Korean Society of Internal Medicine (academic committee member)
- Korean Society of Hepatology (Chairman, Secretary)
- Korea Fire Extinguisher Certification Association (Academic Director and External Director)
- Member of the Gastroenterology Association (standing, current)
