Jeffrey Tuan is a Senior Consultant Radiation Oncologist in the Division of Radiation Oncology at the National Cancer Centre Singapore. His clinical interests are in managing Urological and Gynecological cancer patients using advanced radiation therapy techniques such as Intensity Modulated, Volumetric Arc Radiotherapy, Stereotactic Body Radiotherapy (SBRT) and LDR/HDR Brachytherapy.  His current research interests are in intra-fractional tumor tracking, brachytherapy, SBRT, focal therapy in prostate cancer and identifying potential biomarkers in radiation sensitivity. He holds a concurrent appointment as an Adjunct Assistant Professor within the Oncology Academic Clinical Program in Duke – National University Singapore (Duke-NUS). He spent four years training and pursuing academic research in both the United Kingdom and Italy in the fields of Clinical Oncology and Particle Beam Therapy.  More recently as the Technical Lead, he is actively involved in the planning and setting up of the new Proton Beam Therapy Centre co-located at the new National Cancer Centre Singapore to be ready in 2021.