Dr. Sun is a licensed Thoracic Surgery in CA. Medical degree obtained from University of Toronto Faculty of Medicine. Completed residency training at McMaster University and fellowship training at Brigham and Womens Hospital. Currently practices at UC Irvine Health (UC Irvine Health), located at 101 The City Dr, Orange, CA 92868. Dr. Sun specializes in minimally invasive heart surgery, including coronary artery bypass, heart valve repair, and procedures to treat atrial fibrillation and arrhythmia.. In addition to English, Dr. Sun speaks Mandarin.