Dr Tung is affiliated with The University Of Chicago Medical Center and has authored over 200 peer-reviewed articles and participated in 8 clinical trials in the past 15 years. In particular, he has co-authored 101 articles and participated in 1 clinical trial in the study of ventricular tachycardia (VT).

Cardiology is Dr Tung’s main specialty, whilst his two subspecialties are general cardiology and cardiac electrophysiology. He is an expert in the management of heart rhythm disorders (arrhythmias), with a particular focus on advanced therapies for atrial fibrillation and ventricular arrhythmias. He specialises in arrhythmia management through catheter ablation — a procedure that targets and cauterises abnormal tissue to eliminate heart rhythm irregularities.

In 2019, Dr Tung gained further recognition after performing the first cardioneural ablation in the US. This process had already been carried out in Europe, South America and Asia, but not in his home country. The treated patient was a 52-year-old woman who experienced recurring sudden drops in heart rate and blood pressure that had been causing her to faint at least once every two months for most of her life. A year-and-a-half since having undergone the procedure, the patient had reportedly not fainted again.

In 2021, Dr Tung was named Division Chief of the Division of Cardiology and Director of Cardiovascular Clinical Research for the Department of Internal Medicine at the University of Arizona College of Medicine.

Dr Tung is currently the principal investigator for several prospective randomised ventricular tachycardia ablation clinical trials focusing on the role of robotic navigation, high-density multielectrode mapping and early intervention to improve patient survival. Dr Tung’s work has been published in numerous respected, peer-reviewed journals, including Circulation, Journal of the American College of Cardiology, Heart Rhythm, Circulation: Arrhythmia Electrophysiology, Journal of Cardiovascular Electrophysiology and Arrhythmia & Electrophysiology Review.