Dr Tay graduated from the Yong Loo Lin School of Medicine, National University of Singapore in 1997. He completed Anaesthesia training in 2004 in Singapore and was trained in chronic pain management in Prince of Wales Hospital in Sydney, Australia in 2007.
D Tay has been involved in training and assessment since 2010 and is currently the chief examiner for the Master of Medicine (Anaesthesiology) examination and chair of the ABMS local workgroup. He is part of the core faculty of the NUHS Anaesthesiology Residency Programme.