- Jeonju Jesus Hospital Resident
- Head of Stroke Rehabilitation Department, National Rehabilitation Center
- Emory University Graduate School of Public Health training (Humphrey fellowship)
- Director, Department of Rehabilitation Medicine, International St. Mary's Hospital, Catholic Kwandong University
- Vice Director, Clinical Medical Research Institute, International St. Mary's Hospital, Catholic Kwandong University
- Professor at Catholic Kwandong University International St. Mary's Hospital
- International Society of Physical and Rehabilitation Medicine
- Korean Academy of Rehabilitation Medicine
- Korean Stroke Association
- Korean Society for NeuroRehabilitation
- World Federation for NeuroRehabilitation
- World Stroke Organization
