Oscar R. Colegio gained a PhD from Yale University (Department of Cell Biology) in 2003 and was awarded his MD by Yale University School of Medicine in the following year. After a residency and a fellowship in the Department of Dermatology at the university, Dr. Colegio became an Instructor of Dermatology at Yale in 2009, was appointed Assistant Professor in 2010, and was appointed Associate Professor of Dermatology, Pathology and Surgery in 2016. Dr. Colegio is a member of the Alpha Omega Alpha Honor Medical Society and a recipient of the Hugh L. Dwyer Resident Award for Clinical Excellence. In 2013 he was a finalist in the Damon Runyon Cancer Research Foundation Clinical Investigator Award. He has taught a variety of courses at Yale, including on Skin Physiology and Dermatologic Manifestations of Systemic Diseases. Since 2009 he has been a member of the Board of Directors and Chair of the Research Committee of the International Transplant Skin Cancer Collaborative. Dr. Colegio is a reviewer for a number of leading journals.