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Ralf Holzer

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About Ralf Holzer

Division Chief - Pediatric Cardiology

Ralf J. Holzer, MD, MSc is Professor of Clinical Pediatrics at Weill Cornell Medical College and the acting Chief of the Division of Pediatric Cardiology and Director of the Cardiac Catheterization Laboratory at Sidra Medical & Research Center in Doha, Qatar.

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 his current position at Sidra Medical & Research Center in Doha, Qatar.

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 80 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.

  •   Degrees:  MD, MSc
  •   Specialities: 
Years of Experience
Clinical Excellence Awards


Characteristics and safety of interventions and procedures performed during catheterization of patients with congenital heart disease: early report from the national cardiovascular data registry
Cardiology in the Young. October 2015. 26(6):1202-12....
Holzer R, Beekman R, Benson L, Bergersen L, Jayaram N, Jenkins K, Kennedy K, Moore J, Ringel R, Rome J, Vincent R, Martin GR
Relationship between procedural adverse events associated with cardiac catheterization for congenital heart disease and operator factors: Results of a Multi-Institutional Registry (C3PO)
Catheter Cardiovascular Interv. 2013 Sep 1;82(3):463-73...
Ralf Holzer, Lisa Bergersen, Gauvreau K, Kreutzer J, Moore JW, McElhinney DB
Adverse Events and Procedural Characteristics- Results of a Multi-Institutional Registry
Circulation Cardiovascular Interv 2011 June 4 (3):287-96...
Holzer R, Gauvreau K, Lock J, Cheatham J, Kreutzer J, Leahy R, Murphy J, Bergersen L
Acute, Intermediate, and Long-Term Results of a Prospective Multi-Institutional Registry- Congenital Cardiovascular Interventional Study Consortium
Catheter Cardiovascular Interv 2010 October; 4(76):553-563....
Holzer R, Qureshi S, Ghasemi A, Vincent J, Sievert H, Gruenstein D, Weber H, Alday L, Petrone A, Zellers T, Cheatham JP, Slack M
Completion Angiography After Cardiac Surgery for Congenital Heart Disease: Complementing the Intraoperative Imaging Modalities
Pediatr Cardiol 2009; 30(8):1075-1082...
Holzer RJ, Sisk M, Chisolm JL, Hill SL, Olshove V, Phillips A, Cheatham JP, Galatowicz M