Dr. Michael Haddock is an Associate Professor of Oncology, Mayo Clinic College of Medicine and is a consultant and chair of the clinical practice committee in the Department of Radiation Oncology. He is currently serving as a Vice Chair of the American College of Surgeons Oncology Group (ACOSOG) gastrointestinal and sarcoma committee and is the Mayo Clinic Principle Investigator for the Radiation Therapy Oncology Group.