Dr Howe Hwee Siew

2018 – present

Dr Leong Khai Pang

2012 – 2018

Dr Bernard Thong

2007 – 2012

Dr Kong Kok Ooi

2005 – 2007

Dr Chng Hiok Hee

1994 – 2005

Dr Feng Pao Hsii

1981 – 1993

Dr Tay Chong Hai

1976 – 1980