Han is a cardiologist and electrophysiologist with a special interest in heart rhythm disorders. Han has extensive experience in the areas of catheter ablation for complex cardiac arrhythmias and device implantations. He is a recipient of the Parmley Prize from the American College of Cardiology for his PhD research into stroke prevention in atrial fibrillation. Under a NHMRC fellowship, Han trained with Professor Michel Hassaguerre in France, a leading pioneer in AF ablation. Han holds public appointments at Austin Health and Northern Health. His research interests include the latest ablation techniques for AF, and stroke prevention in AF.