Dr Dai is the Clinical Director for Healthcare for the Senior at Qualigenics. During his 30-year career, Dr Dai specialized in geriatric, rehabilitation, and pulmonary medicine. He was the Consultant Geriatrician at Prince of Wales Hospital and taught in The Chinese University of Hong Kong and Hong Kong University. David now serves as the Chairman of the Hong Kong Alzheimer’s Disease Association. Dr Dai obtained his LLB and became an accredited mediator in 2010. Dr Dai now also chairs the Independent Committee for Handling Complaints of the Social Welfare Department from 2015.