He received his MD degree and training in internal medicine at Duke University, and subsequently trained in Hematology at the University of Pennsylvania. He was a faculty member at the University of Pennsylvania, Temple and Case Western before joining the Cleveland Clinic in 2010. In addition to patient care, he maintains active clinical and laboratory-based research programs. His clinical interests include ITP, the antiphospholipid antibody syndrome, and several other hematologic disorders. His laboratory focuses on platelets, immune-mediated endothelial cell activation, and mechanisms of thrombosis in patients with cancer. He is active in many programs of the American Society of Hematology, and is Deputy Editor of the annual ASH Education book. He is also a frequent grant reviewer at the National Institutes of Health.