Nicolas Madsen, M.D., is the Co-Director of The Heart Center and Chief of Cardiology at Children’s Health℠. He is also an Associate Professor of Cardiology at UT Southwestern. 

He earned his medical degree at University of Washington School of Medicine, where he also completed his residency training in pediatrics and his fellowship training in pediatric cardiology. Prior to his arrival at Children’s Health, Dr. Madsen was the Medical Director of the Heart Institute at Cincinnati Children’s Hospital.

Dr. Madsen is a nationally recognized leader and researcher who works to improve the quality of life for children with congenital heart disease. He co-founded the Pediatric Acute Care Cardiology Collaborative (PAC3) and serves as Executive Director. The goal of this organization is to help children hospitalized with heart conditions achieve better outcomes through traditional research and quality improvement science. His dedication to children’s heart health has previously earned him the Heart Hero Award from the advocacy group Conquering Congenital Heart Disease and the Clinical Care Award from Cincinnati Children’s Hospital.