He completed clinical training in internal medicine at the Massachusetts General Hospital and medical oncology training at the Dana-Farber Cancer Institute. He subsequently pursued research training in cancer genomics and cancer biology at both the Dana-Farber Cancer Institute and Broad Institute. During that time he developed a research interest in studying the somatic-genomic alterations in gastrointestinal cancer using new emerging genomic technologies and also studying candidate genomic alterations in the laboratory using more traditional functional biology.