Bachelor of Medicine BChir, National University Singapore, 1988. Master in Medicine, National University Singapore, 1993.
Intern Singapore General Hospital, 1988—1989. Resident Singapore General Hospital/Tan Tock Seng Hospital, 1991—1993. Registrar Tan Tock Seng Hospital, 1994—1996, senior registrar, 1997—1999, consultant rheumatologist, 1999—2000.
Fellow Mayo Clinic, Rochester, Minnesota, 1996—1997. Consultant rheumatologist National University Hospital, Singapore, 2000—2003. Assistant professor National University Singapore, 2000—2002, associate professor, 2003—2009, adjunct professor, since 2009.
Consultant rheumatologist Singapore General Hospital, 2003, senior consultant rheumatologist, since 2004, head department, since 2007. Member specialist training committee rheumatology Ministry Health. Major Singapore Armed Forces, 2000.
Vice chairman National Arthritis Foundation, Singapore, 2002. Fellow: Royal College Physicians. Member: College Physicians Singapore (honorary secretary 2005-2006, treasurer since 2006), Academy Medicine Singapore (executive committee member 2001-2002, honorary secretary 2003-2004, Chapter of Physicians), Singapore Society Immunology, Allergy and Rheumatology (secretary 1994-1996).
Married Lai-Fun Sum; 3 children.