Professor Wong holds the Regius Chair in Pharmacy at Aston University in England, a position established by the late Queen Elizabeth II to mark her 90th birthday. He joined the University of Hong Kong in 2011 and was the Head of the Department of Pharmacology and Pharmacy. His expertise lies in using healthcare big data research to investigate the safety and optimal use of medications for treating various conditions, specifically neurological and psychological conditions. His spin-off companies from UCL and the University of Hong Kong have developed several marketed paediatric medicines in Europe and Hong Kong, which are widely used by children. In recognition of his contributions to medicines for children, he was awarded an honorary fellowship from the Royal College of Paediatrics and Child Health.
Professor Wong has advised the Departments of Health in England and Hong Kong, the World Health Organization, the European Medicines Agency, and the pharmaceutical industry on various issues related to medication safety. He has approximately 700 peer-reviewed papers published in prominent journals and was a highly cited researcher in 2024.
During the pandemic, Professor Wong was commissioned by the Hong Kong SAR Government to monitor the safety of COVID-19 vaccines on behalf of the Department of Health. In 2022, the Chief Executive of the Hong Kong SAR Government awarded him a Commendation for Community Service for his contributions to the fight against the pandemic.