Dr. Jang has been a visiting fellow at some of the world’s most prestigious medical institutions, including:
- Harvard University – Massachusetts General Hospital
- Columbia University Medical Center, New York
- Rush University Medical Center, Chicago
- Mayo Clinic Teach the Teachers Course
His dedication to medical education has also led him to serve as:
- Professor of Orthopedic Surgery at Seoul Paik Hospital, Inje University
- Director of the Sports Medical Center, Seoul Baek Hospital
- KOFIH Lee Jong-wook Fellowship Supervisor Professor
In addition to his clinical practice, Dr. Jang has served on the academic committees of multiple orthopedic societies, including:
- Korean Society of Orthopedic Ultrasound
- Korean Orthopedic Sports Medicine Society
- Korean Society of Shoulder and Elbow Surgery
- American Academy of Orthopaedic Surgeons (AAOS)