Trained in Cardiology and Critical Care Medicine (Boston Children’s Hospital, 1993-1998), Cardiac Intensive Care Children’s Hospital of Philadelphia (1998-2008) and University of California (2088 to current).  Executive Director of the Pediatric Cardiac Critical Care Consortium, PC⁴ (2020 to 2025).  Mentor for Vietnam National Children’s Hospital (2018 to present).  Clinical interests include neonatal and preterm congenital heart surgery and hypoplastic left heart syndrome.  Research focus is registry science.