Jay S. Loeffler, M.D., is an honors graduate of Williams College and Brown University School of Medicine. He completed his rad/onc training at the Harvard Joint Center for Radiation Therapy & a year of post-doctorial fellowship at Harvard School of Public Health Radiobiology Laborator. He is serving on the faculty at Harvard Medical initially at the Brigham and Women’s Hospital and Dana-Farber Cancer Institute(1986). He was recruited to the MGH in 1996 as Director of the NE Proton Therapy Center.He is currently the Herman and Joan Suit Professor of Radiation Oncology, Harvard Medical School and Chairman of the Department of Radiation Oncology since 2000. He is an authority on the treatment of benign and malignant brain tumors. He is an author of over 200 peer reviewed publications, 180 book chapters & review articles and co-editor of 9 textbooks. He has served as PI on a large program project grant from the NCI concerning proton therapy. He serves on the Editorial Boards of 8 journals