Dr. Jun Dong is a medical officer and senior clinical reviewer at the Center for Devices and Radiological Health (CDRH), US Food and Drug Administration (FDA). He provides scientific and clinical leadership in the area of cardiac electrophysiology devices and procedures, with particular emphasis on the evaluation of ablation, mapping and imaging devices for the treatment of arrhythmias in the CDRH’s Office of Cardiovascular Devices. A significant part of his work involves collaborating with device manufacturers and investigators to design clinical studies that are robust, efficient, and tailored to the technology and the medical need being addressed. Dr. Dong is also an Adjunct Assistant Professor of Medicine at the Johns Hopkins Medicine/Cardiology. He earned his medical degree at the Chongqing Medical University in Chongqing, China. He completed his clinical trainings in Internal Medicine and Cardiology at the Second Teaching Hospital of Chongqing Medical University in Chongqing, China. He received further training in cardiac electrophysiology at the German Heart Center Munich under Claus Schmitt, MD and Bernhard Zrenner, MD and a doctorate from the Technische Universtät München in Munich, Germany. He then completed a postdoctoral clinical research fellowship in cardiac electrophysiology under Hugh Calkins, MD with emphasis on catheter ablation of atrial fibrillation and image-guided catheter ablation of complex arrhythmias at the Johns Hopkins Electrophysiology Laboratory before joining the FDA.