Dr. Tullis is a Professor of Medicine at the University of Toronto, the Respirology Division Head at St. Michael's Hospital, and an Adjunct Scientist at the Keenan Research Centre of Li Ka Shing Knowledge Institute. She holds the Cystic Fibrosis Canada Chair in Adult CF Research. Dr. Tullis has published over 140 articles and book chapters and has lectured nationally and internationally on issues related to CF in adults. She has trained 20 CF fellows who are now working in CF clinics around the world. In 2012, she was awarded the Queen Elizabeth II Diamond Jubilee Medal to recognise her contributions to the care of people with cystic fibrosis in Canada and in 2017 she received the Dr Douglas Crozier Award from Cystic Fibrosis Canada in recognition of significant contribution and outstanding dedication to the fight against cystic fibrosis.