Dr. Roy Phitayakorn, son of Drs Chet and Preyaratt Phitayakorn, who graduated from Siriraj Medical School, was recently promoted to Full Professor of Surgery at Harvard Medical School, part of Harvard University. Dr Roy Phitayakorn is an Endocrine Surgeon in the Department of Surgery at the Massachusetts General Hospital. He is the Vice Chair of Education, Co-Director of the MGH Surgery Education Research Group, and Surgery Clerkship