Dr. El-Sherif is an internationally recognized authority in Cardiac Electrophysiology. He is a member of several National and International medical societies and serves on the editorial board of several journals. His research has been consistently supported by federal and non-federal grants for the last 35 years and has dealt with the link between molecular biology, ion channel physiology, cellular electrophysiology and clinical presentations of cardiac arrhythmias. He has published over 500 peer-reviewed manuscripts, reviews, and book chapters and has edited 8 books in the field of cardiac arrhythmias. He has received several honorary awards includingthe 2007 Outstanding Achievement Award from the European Cardiac Arrhythmia Society (ECAS) and the 2010 Pioneer of Cardiac Pacing and Electrophysiology from the Heart Rhythm Society.