It is the largest and oldest hospital in Singapore, and functions as the country’s national hospital. SGH is the flagship hospital of SingHealth, the country’s largest group of public healthcare institutions and the principal teaching hospital for the Duke–NUS Medical School, which is affiliated with the National University of Singapore. 

Its campus includes four national specialty centres, namely the Singapore National Eye Centre (SNEC), the National Heart Centre Singapore (NHCS), the National Cancer Centre Singapore (NCCS) and the National Dental Centre Singapore (NDCS). A fifth specialty centre, the Elective Care Centre Singapore (ECC), is currently under construction and it is expected to be completed in 2025.

SGH has been considered as being one of the best hospitals in the world, being consistently ranked in the top 10 by Newsweek, reaching its highest of 3rd in 2019.

In 2017, the hospital successfully performed the first liver transplant from a living donor involving incompatible blood group in Southeast Asia. The patient is Mr. Chen Yu Hui, 56, and the donor is his son Chen Qingzhong, 32. Both underwent a 12-hour surgery at SGH to replace Mr. Chen’s liver as he was suffering from liver cancer, hepatitis B and liver cirrhosis.

The elder Mr Chen has blood group B positive while his son has blood group A positive. Without a transplant, doctors predicted that the elder Mr Chen had fewer than two years to live.

The surgery went smoothly and just a year later, both of them recovered very well, especially Mr. Chen Qingzhong also had his first child after organ donation.
In addition, SGH is also the place where many treatment methods and the first surgeries in Southeast Asia are performed, such as the first hospital to provide cardiac arrhythmia surgery which corrects the abnormality in the rhythm of the heart; The first hospital to perform cochlear implant surgery (which gives hearing to the profoundly deaf) in Southeast Asia; The first hospital performed the first bilateral maxillo-mandibular advancement operation in Southeast Asia, etc.
According to straitstimes.com, en.wikipedia.org, sgh.com.sg