Dr. Cheung specializes in the treatment of all heart rhythm disorders. His areas of expertise include catheter ablation treatment of atrial fibrillation (AF) and complex atrial tachycardia (with specialization on the use of zero and near-zero X-ray exposure techniques), treatment of ventricular arrhythmias (with extensive experience in robotic magnetic navigation-guided ablation), and cardiac device implantation (with emphasis on His/left bundle region pacing, cardiac resynchronization therapy devices and subcutaneous implantable cardioverter-defibrillators [ICDs]).