He was on staff at Brigham and Women’s Hospital for two years and then joined the Sleep Disorders Program at the University of British Columbia in September 2002. He also has a Master of Public Health from the Harvard School of Public Health.

His research focuses on the public health and safety consequences of sleep apnea and sleep deprivation. His work has been published in a variety of medical journals including the American Journal of Respiratory and Critical Care Medicine, Chest, Sleep, Cardiovascular Nursing, Journal Spinal Cord Medicine, Sleep Medicine, Thorax, Archives of Internal Medicine, Canadian Journal of CME, Mayo Clinic Proceedings, and Current Opinion in Pulmonary Medicine. He has held many national and international leadership positions with respect to sleep medicine, including Executive Member of the Canadian Sleep Society, Head of the Canadian Thoracic Society Sleep Disordered Breathing Guidelines Committee, and Chair of the American Thoracic Society Sleep and Respiratory Neurobiology Planning Committee. In addition, he served as Head of the UBC Division of Critical Care Medicine from 2009 until 2019.