Dr Ong Xi Yar is an Associate Consultant in General Paediatrics at KK Women's and Children's Hospital. He holds an MD from the National University of Malaysia (UKM), an MRCPCH from the Royal College of Paediatrics and Child Health (UK), and a Master of Medicine (Paediatrics) from Singapore. He joined KK Women’s and Children’s Hospital in 2024, where he contributes to the General Paediatrics Service.

Dr Ong has been recognized for his work, receiving the Quality Improvement Project Award for Target Zero Pain in 2019/2020. He is also a SingHealth Associate in Education, further demonstrating his commitment to advancing paediatric education and care.