Tan Tock Seng Hospital (TTSH), established in 1844, part of the National Healthcare Group (NHG), is one of Singapore’s largest multi-disciplinary hospitals, providing holistic and integrated patient care. With a strong quality culture steeped in patient safety, TTSH constantly challenges itself to provide high quality cost-effective care for patients. In recognition of its commitment to excellent patient care and its comprehensive range of quality healthcare services, TTSH has been awarded the ISO 14001 and OHAS 18001 certification.