Stanley J. Hamstra, PhD is currently Vice President, Milestone Research and Evaluation at the Accreditation Council for Graduate Medical Education (ACGME) in the USA. Dr. Hamstra is responsible for leadership and oversight of research in milestones and assessment systems for resident physician trainees. Dr. Hamstra works with medical subspecialty societies, program director organizations, and specialty certification boardsto determine the best competency assessment systems for residency training programs.Prior to joining the ACGME, Dr. Hamstra held faculty positions at the University of Michigan, the University of Ottawa, and the University of Toronto Department of Surgery. He has also worked closely with the Royal College of Physicians and Surgeons of Canada to develop policies regarding competency-based medical education for graduate medical education. Dr. Hamstra received his PhD in sensory neuroscience from York University in Toronto in 1994.