Prof Tan Hak Koon is the Chairman of Obstetrics and Gynaecology, Academic Clinical Programme (OBGYN-ACP) at SingHealth Duke-NUS. He also holds the position of Designated Institutional Official (DIO) at SingHealth Residency concurrently. He is the Chairman, Division of Obstetrics and Gynaecology, and Chief of Obstetrics, KK Women’s and Children’s Hospital. He is an Associate Dean, Office of Academic and Clinical Development, Duke-NUS Medical School. He was the President of College of Obstetrics and Gynaecology, Academy of Medicine, Singapore 2013 - 2015. He was the Head of Department, O&G at Singapore General Hospital 2010 - 2019. He is a Clinical Professor at Duke-NUS Medical School. He has been a teaching faculty and examiner for both undergraduate and postgraduate examinations since 1990s. He is a renowned Maternal Fetal Medicine specialist, and currently sits on many local and international committees and is actively contributing to clinical work, education, and administration.