- 2021-present, Member, Medical Advisory Committee (MAC), CUHK Medical Centre Limited
- 2020-22, Member, Highly Specialized Service (HSS) Proposal Assessment Group (PAG) for CAR T, Hong Kong Hospital Authority
- 2018-22, Member, Expert Advisory Panel in Cancer, Health and Medical Research Fund, Health Bureau, Hong Kong SAR Government
- 2018-present, Associate Editor, Cancer Science
- 2017-present, Honorary Professor, Peking Union Medical College, China
- 2014-present, Honorary Consultant, Department of Health, Hong Kong SAR Government
- 2014-present, Associate Editor, Annals of Oncology
- 2014-21, Panel of Assessors, The Hong Kong Medical Council
- 2014-20, Advisory Committee, Admission of Quality Migrants and Professionals, Security Bureau, Hong Kong SAR Government
- 2013-present, Vice-President, Hong Kong College of Physicians
- 2011-22, Member of HA Drug Formulary (Oncology) Expert Panel, Hong Kong Hospital Authority
- 2011-20, Education and Accreditation Committee, The Hong Kong Medical Council
- 2009-15, Member, Human Organ Transplant Board, Hong Kong SAR Government
- 2008-present, Member, Central Committee on Cancer Service, Hong Kong Hospital Authority
- 2007-present, Visiting Professor, The Cancer Centre at Sun Yat-Sen University, China
- 2005-present, Cluster Coordinator (Clinical Oncology), New Territories East Cluster, Hong Kong Hospital Authority
- 2004-present, Member, Cancer Coordinating Committee, Health Bureau, Hong Kong SAR Government
- 2004-present, Member, Co-ordinating Committee in Internal Medicine, Hong Kong Hospital Authority
- 2002-present, Co-Chair, NTEC Cancer Services Committee, Hong Kong Hospital Authority
- 2002-11, 14-20, Honorary Chief of Service in Clinical Oncology, Prince of Wales Hospital, Hong Kong Hospital Authority
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