Dr Tan Wei Ching graduated from NUS in 1997 and became a member of the Royal College of Obstetricians and Gynaecologists (UK) in 1999 and received the Advanced Diploma in Obstetric Ultrasound from the Royal College of O & G (UK) in 2005. After becoming an accredited specialist in O&G in 2005, she spent 2 years in the United Kingdom training in her subspecialty of interest - Fetal Medicine.

In addition to performing deliveries and general gynaecological operations such as cystectomy, myomectomy and hysterectomy, she coordinates the Down Syndrome Screening Programme within the department and perform invasive procedures such as chorionic villus sampling and amniocentesis for certain high risk pregnancies. She is certified by the Fetal Medicine Foundation (UK) to perform first trimester screening for Down Syndrome and continue to pursue research and breakthroughs in this area.