Patrick J. Loehrer Sr., M.D., is on the Board of Directors and Chair of the Medical Subspecialty Committee of the American Board of Internal Medicine. He is also the Editor-in-Chief of the Yearbook of Oncology and co-editor for the Yearbook of Medicine and serves on numerous editorial boards. He was the Founding-Director of the Hoosier Oncology Group. He is also a former member of the Board of Directors of the American Society of Clinical Oncology. He serves as the Deputy Director of the IU Cancer Center and the Medical Director of the Mel and Bren Simon-Indiana University Cancer Center.