Dr. Koirala serves as the Program Director of Interventional Oncology and a Consultant Interventional Radiologist at Nepal Cancer Hospital & Research Center in Kathmanu and Secretary General of the Nepalese Society of Vascular and Interventional Radiology (NSVIR). He has completed a fellowship in Body Interventional Radiology at Siriraj Hospital, affiliated with Mahidol University in Bangkok, Thailand after residency training in Radiology from Manila, Philippines.