Faculty Research

Heart Institute Cardiologists

Harjot Bassi, M.D.

Christopher Davis, M.D., Ph.D.

Dr. Davis’ research interests include studying exercise physiology of patients with congenital heart disease, athlete’s heart and diseases that cause sudden cardiac death in the young.

Tommy Do, M.D., M.S.

Dr. Do has a special interest in outcomes research for patients in the CVICU in addition to looking at markers to predict liver dysfunction in single ventricle patients post Fontan palliation.

Howaida El-Said, M.D., Ph.D.

Dr. El-Said’s research interest include 3-D angiography to facility catheterization procedures,  modifying stents to suit growing children, percutaneous valve development, innovative interventional techniques to avoid surgery, adult congenital Fontan patients and bioengineering of special wires to facilitate cath procedures.

Brian Fagan, M.D.

Dr. Fagan’s research includes investigation of Ebstein’s anomaly of the tricuspid valve.

Paul Grossfeld, M.D.

Dr. Grossfeld’s research is focused on understanding the genetic basis of congenital heart disease. His primary interest is Jacobsen syndrome, a rare chromosomal disorder caused by the deletions in chromosome 11. Dr. Grossfeld has determined that loss of the ETS-1 gene causes hypoplastic left heart syndrome and other congenital heart defects in Jacobsen syndrome.

Sanjeet Hegde, M.D., Ph.D.

Dr. Hegde’s research interests include in-vitro measurement of the safety of devices for interventional MRI, development of catheters and in-vitro testing of their suitability for interventional MRI, device implantation under XMR, catheter tracking under MRI, image guidance of cardiac interventions, 3-D printing, virtual reality and computational modeling of complex congenital heart disease.

Rachel McCandless, M.D.

John W. Moore, M.D., M.P.H.

Dr. Moore’s major clinical and research focus is congenital and structural interventional cardiolog

Hari Narayan, M.D.

Dr. Narayan’s research is focused on the cardiotoxic effects of cancer therapies. He is interested in characterizing the natural history and risk factors for the development of cardiomyopathy after cancer therapy and determining the optimal diagnostic and management strategies for this disease.

James Perry, M.D.

Dr. Perry is interested in clinical and translational research projects on antiarrhythmic drugs, catheter ablation, adult congenital heart arrhythmias, computational modeling of congenital heart disease, innovative device designs, bioengineering and electrophysiology, cardiac genomics and channelopathies. 

Beth Printz, M.D., Ph.D.

Kanishka Ratnayaka, M.D.

Dr. Ratnayaka’s research includes diagnostic MRI, MRI catheterization, X-ray fused with MRI (XFM,) MRI-guided intervention and MRI device innovation.

Serena Sah, M.D.

Rakesh Singh, M.D., M.S.

Dr. Singh’s clinical and research interests include outcomes after heart transplantation, pediatric ventricular assist devices and heart failure management in congenital heart disease and cardiomyopathies. In addition, he is an active participant in the following multi-center registry research groups: Pediatric Heart Transplant Study (PHTS), Pediatric Interagency Registry for Mechanically Assisted Circulatory Support (pediMACS) and International Pediatric Heart Failure Registry (iPHFR).

Heather Sun, M.D.

Dr. Sun’s clinical and research interests include improved prenatal diagnosis and management of fetal congenital heart disease and non-traditional methods of functional cardiac assessment.

Gabrielle Vaughn, M.D.

Matthew Williams, M.D.

Dr. Williams has clinical and research interests related to the diagnosis and management of cardiac rhythm disturbances from fetal to adult life, including non-invasive and invasive monitoring and diagnostic techniques, antiarrhythmic medications, catheter-based therapies for arrhythmias, heritable arrhythmia syndromes, rhythm disturbances associated with congenital heart disease and pacemaker and ICD implantation and programming.

Justin Yeh, M.D.

Dr. Yeh’s  clinical and research interests are pediatric mechanical circulatory support, in particular the application of ventricular assist devices to support patients with refractory heart failure. His research also involves the  use of erythropoietin to reduce transfusion burden and improve the care of patients with cyanotic congenital heart disease.

Cardiovascular Surgery

Raghav Murthy, M.D.

Dr. Murthy’s clinical and research interests are focused on surgical management of congenital heart disease in people of all age groups, complex neonatal and infant heart surgery, robotics in thoracic surgery, mechanical assist devices and transplantation of thoracic organs.

John Nigro, M.D.

Dr. Nigro’s research interests include outcome analysis, especially for patients with hypoplastic left heart syndrome, cerebral blood flow and 3-D simulation and imaging.