Dr. Co joined the ACGME in March 2026 and oversees the organization’s education and research strategy and activities, including leading the teams that manage the Annual Educational Conference, digital learning, continuing education, the Milestones, and educational research. He also provides executive sponsorship for the operations of The Journal of Graduate Medical Education, which is editorially independent from the ACGME overall.

Dr. Co previously served as Vice President of Education and designated institutional official for Mass General Brigham and was an associate professor of pediatrics at Harvard Medical School. A board-certified general pediatrician, Dr. Co has served in leadership roles at the department, institutional, and health system levels in several areas, including medical education, quality and safety, equity, and operations. As Massachusetts General Hospital (MGH)’s Director of Pediatric Ambulatory Quality and Safety, he chaired the department’s ambulatory operations committee and led the development and implementation of its quality incentive program, as well as its strategy for improving psychological safety across clinical divisions and units.

Dr. Co has served in regional and national roles related to graduate medical education and quality of care, including as Chair of the Association of Pediatric Program Directors Research Task Force, as a member of the American Board of Pediatrics Foundation Board of Directors and the Expert Advisory Panel for the Children’s Hospital GME Quality Bonus System, as Co-Chair of the ACGME’s Clinical Learning Environment Review (CLER) Evaluation Committee, and on the ACGME Board of Directors, including as Chair of the ACGME Awards Committee. He has served in editorial roles with several leading journals, including Ambulatory/Academic Pediatrics, Pediatrics (Quality Reports), and JAMA Pediatrics (Clinical Review and Education), and is the inaugural Editor in Chief of Pediatrics Open Science.

Dr. Co has served as Principal and/or Co-Investigator on projects funded by the Agency for Healthcare Research and Quality, World Health Organization, and American Medical Association (AMA), including as the Principal Investigator on an AMA-funded Reimaging Residency Grant looking at the feasibility and outcomes of competency-based time-variable advancement in residency.