Dr Loh graduated from the Faculty of Medicine, National University of Singapore. He underwent specialist training in Otolaryngology at the National University Hospital and subsequently surgical fellowship in Head and Neck Cancer Surgery at the Princess Margaret Hospital and Toronto General Hospital in Canada. He is a Senior Consultant at the Department of Otolaryngology Head & Neck Surgery and Professor in the Department of Otolaryngology, National University of Singapore. His interest of practice is in Head and Neck Oncology and in the past 25 years or more, his practice is mainly in patients with cancers of the nasopharynx, thyroid, salivary glands, oral cavity, pharynx and larynx, as well as uncommon and rare head and neck tumours. He is also the Group Chairman, Medical Board, at the National University Health System.