Tang graduated in the University of Hong Kong in 2004, and attained his membership in the Royal College of Physicians in 2007. Interested in travel medicine and global health, he became the Member of the Faculty of Travel Medicine, Royal College of Physicians and Surgeons of Glasgow in 2017. Currently he is working as the associated consultant of the Division of Infectious Diseases, Queen Elizabeth Hospital, Hong Kong. He has various peer-review publications including the Emerging Infectious Diseases, the Clinical Infectious Diseases, and the New England Journal of Medicine.