Dr. Hirsch attended Mount Sinai School of Medicine and went on to train in general and cardiothoracic surgery at Mass General Hospital. He received formal research training in vascular biology and took up a position in The Division of Cardiac Surgery at Dalhousie University in 1995. While initially focused on translational basic science work in chronic vascular rejection he simultaneously established an outcomes research effort and established a continuous quality improvement program using individual surgeon and anesthetist outcome reporting to drive physician engagement in process improvement. Intrigued by the prevalence of older patients referred for cardiac surgical intervention and aware of the pioneering work in frailty of Dr. Ken Rockwood at Dalhousie, Greg went on to demonstrate for the first time the impact of frailty on adverse outcomes in cardiac surgery. In the past several years Greg has focused exclusively on health services research with particular attention to frailty measures and shared decision making implementation among frail patients referred for cardiac surgery. Greg has served as Division Head Cardiac Surgery at Dalhousie/Nova Scotia Health Authority from 2005 to 2018 and more recently has taken on the health authority role of Senior Director of Perioperative Services for the Province of Nova Scotia.