Hyun S Yum List of directors and agents named Hyun S Yum. Found 2 results. HYUN S. YUM Registered Address: 16205 HOLLY HILL DR. WALDORF MD 20601 Appointed in one company. Go To Profile HYUN S. YUM Registered Address: 2009 DOWNSHIRE CT. WALDORF MD 20603 Appointed in one company. Go To Profile