Duncan is a partner and head of the Medical Malpractice group at Neinstein Personal Injury Lawyers. He primarily acts on behalf of plaintiffs on cases involving all areas of medical negligence including obstetrical negligence and surgical negligence. He also acts for plaintiffs on all types of catastrophic personal injury claims including claims for institutional negligence, occupier's liability, motor vehicle accidents and product liability matters. Duncan also handles complex multi-jurisdictional cases to assist Ontario residents in recovering damages where the injuries occurred in a foreign jurisdiction. Duncan has also acted on behalf of the other lawyers in handling complex medical negligence cases at both trial and appeal. He is a regular speaker and presenter in all areas of medical negligence for the Ontario Trial Lawyers Association, the Ontario Bar Association and the Law Society of Ontario. He has been voted by his peers as a leading expert in his field since 2014 in the Canadian Lexpert® Directory and has been named as one of Canada's Best Lawyers since 2015. Additionally, Duncan has been certified as a specialist in civil litigation by the Law Society of Ontario.