Dr. López received his MD from the University of New Mexico and completed residency and subspecialty training in Internal Medicine and Hematology, respectively, at the University of Washington in Seattle. He subsequently held positions at the Gladstone Institute for Cardiovascular Disease/University of California, San Francisco and Baylor College of Medicine, Houston, Texas. At Baylor, he was Vice-Chair for Research in the Department of Medicine, before returning to Seattle to head the research program at Puget Sound Blood Center (now Bloodworks Northwest). He is also Professor of Medicine (Hematology) and Adjunct Professor of Biochemistry, Pathology, and Mechanical Engineering at the University of Washington.