Dr. Benza served on the thoracic board of the United Network of Organ Sharing (UNOS) and sits on the executive committee for organ transplantation for the U.S. Department of Health and Human Resources. His primary clinical interests are in the evaluation and treatment of advance congestive heart failure, cardiac transplantation, and pulmonary arterial hypertension. He is a funded investigator for the National Institutes of Health and the American Heart Association for his work in cardiac transplantation and pulmonary arterial hypertension. He has been and continues to participate in most major clinical studies of new therapies for the treatment of heart failure, mechanical support and pulmonary hypertension.