Dr Tsang obtained his medical degree with honours at the University of Hong Kong in 2010, after which he joined the faculty as Clinical Assistant Professor in the Department of Surgery. He completed neurosurgery training in Queen Mary Hospital, Hong Kong, and specialized in endovascular neurosurgery and stroke treatment. He was awarded the Health and Medical Research Fund Research Fellowship Scheme to pursue a Fellowship in Interventional Neuroradiology at Toronto Western Hospital, under the mentorship of Professor Timo Krings in 2018.

As an academic neurosurgeon, he published more than 50 peer-reviewed papers focused on acute stroke treatment, endovascular interventions for aneurysms, AVMs, and large vessel occlusion, and clinical neurosurgery. He is also committed to improve the systems of care of hyperacute stroke in Hong Kong, and initiated cross-specialty projects with ambulance services, statisticians, computer scientists in pre-hospital stroke diagnosis. Ongoing research projects include clinical studies on large vessel occlusion thrombectomy, intracranial atherosclerosis, cerebral aneurysm, and intracranial hemorrhage.