Prior to her private practice in 2006, Dr Oh was with National University of Singapore (NUS), Department of Paediatrics. She was attached to the Division of Gastroenterology and Hepatology, with research papers presented on recurrent Abdominal Pain in Children. She was awarded the 1st runner up in the NHG Young Doctor award in 2004 for the work done. She then moved on to assist in the setting up of the National University Hospital, Children’s Emergency in 2002. Since then, she has dedicated her time to clinical practice in Children’s Emergency, and teaching students. She is also one of the few female Paediatricians who was invited to be an Advanced Trauma Life Support instructor.