Dr Ng Chee Keong practises as a cardiologist at Mount Elizabeth Novena Hospital, Singapore, with a focus on interventional cardiology, general cardiology, and cardiovascular imaging. He performs catheter-based procedures to diagnose and treat various heart conditions. After beginning his medical training at Singapore General Hospital, he received a Ministry of Health scholarship in 2001 to train in nuclear cardiology at Cedars-Sinai Hospital, USA. He later earned a second scholarship to complete advanced training in interventional cardiology at Johns Hopkins Hospital. In 2002, he established the nuclear cardiology service at Tan Tock Seng Hospital, where he also led the Coronary Care Unit for over five years.