Ralf J. Holzer, MD, MSc is Professor of Clinical Pediatrics at Weill Cornell Medicine and the Chief of the Division of Pediatric Cardiology and Director of Pediatric Cardiac Catheterization at Weill NewYork-Presbyterian Weill Cornell Medical Center.

Dr. Holzer received his medical degree from the Johannes Gutenberg University Mainz in Germany. He completed his residency training in Germany and the United Kingdom, and his cardiology fellowship training at the Royal Liverpool Children’s Hospital in the UK, including an advanced fellowship in transcatheter interventions at the University of Chicago Children’s Hospital. Dr. Holzer subsequently worked as a consultant in pediatric cardiology and head of interventional services at the Royal Liverpool Children’s Hospital (UK) from 2004-2005, and subsequently as an attending physician and Co-Director of the cardiac catheterization laboratory at Nationwide Children’s Hospital in Columbus, Ohio (2005-2014). In 2014, Dr. Holzer took up a position as the Director of the Catheterization laboratory at Sidra Medical & Research Center in Doha, Qatar, where he also held the position as acting chief from October 2014 until his departure to Weill Cornell New York in May 2017.

Dr. Holzer is a pediatric cardiologist and an expert in all types of transcatheter interventions for patients with congenital heart disease and has demonstrated novel interventional techniques through live case demonstrations at many larger national and international scientific meetings.

Dr. Holzer has an extensive academic and research portfolio with more than 90 peer-reviewed publications, 20 book chapters and numerous scientific abstracts to his name. He has a particular interest in outcomes research, quality improvement, and risk adjustment. Dr. Holzer also holds a Masters Degree in Information Technology.