Dr. Andrew Mark Choong Tze Liang

Dr Andrew Choong is a leading vascular, endovascular, venous and aortic surgeon at Mount Elizabeth Medical Centre. He manages the full spectrum of arterial, venous and aortic diseases, with particular expertise in complex aortic surgery, minimally invasive varicose vein treatment, and deep vein thrombosis (DVT) management.

His practice combines advanced open, hybrid and endovascular techniques, including EVAR and TEVAR for aortic aneurysm and aortic dissection repair; carotid artery disease and stroke prevention; peripheral arterial disease revascularisation, limb salvage and chronic wound care; and comprehensive venous disease management. For varicose veins and chronic venous insufficiency, he offers modern minimally invasive treatments such as radiofrequency and laser ablation, adhesive (glue) closure, foam sclerotherapy and ambulatory phlebectomy. He also manages complex venous thromboembolism, including DVT thrombolysis and aspiration thrombectomy, as well as dialysis access surgery with arteriovenous fistula and graft creation.

A recognised pioneer in venous care, Dr Choong has performed ClosureFast™ radiofrequency ablation since 2008 and was among the first surgeons in Singapore to adopt VenaSeal™ glue ablation for varicose veins. He has performed more than 5,000 vascular and endovascular procedures to date.

Dr Choong trained in the United Kingdom and Australia, completing advanced vascular fellowships at the Imperial Vascular Unit, St Mary’s Hospital, London, and the Royal Brisbane and Women’s Hospital. He was awarded a PhD by the University of Warwick for research in endovascular innovation. Prior to private practice, he served as Senior Consultant at the National University Heart Centre Singapore and Associate Professor of Surgery at the National University of Singapore, where he helped develop new vascular programmes and trained future specialists. He is the founder of the Asian Aortic & Vascular Centre and a recipient of the Gold Medal from the European Board of Vascular Surgery (FEBVS).

Endovascular aneurysm repair (EVAR) and thoracic endovascular aortic repair (TEVAR)
Open abdominal aortic aneurysm repair
Peripheral arterial disease revascularisation (angioplasty, stenting and bypass surgery)
Carotid artery endarterectomy and carotid artery stenting
Varicose vein treatment (radiofrequency, laser, adhesive and foam ablation)
Chronic venous insufficiency management
Deep vein thrombosis thrombolysis and aspiration thrombectomy
Dialysis access creation and maintenance (arteriovenous fistula and graft surgery)
Vascular access procedures including catheter insertion and removal
Limb salvage and wound management for critical limb ischaemia

Visceral hybrid repair of thoracoabdominal aortic aneurysms
Retroperitoneal open repair of abdominal aortic aneurysms
Complex aortic dissection repair using hybrid open and endovascular techniques
Advanced endovascular limb-salvage procedures for critical limb ischaemia
Minimally invasive, walk-in walk-out varicose vein surgery
ClosureFast™ radiofrequency ablation and VenaSeal™ adhesive closure techniques for varicose veins

Dr Choong has authored more than 100 peer-reviewed journal articles and book chapters in vascular and endovascular surgery. His research focuses on complex aortic repair and endovascular innovation, venous disease management, and limb preservation.

Selected recent publications include:

• Ng JJ et al. Percutaneous decannulation of veno-arterial ECMO using the Manta vascular closure device. Artificial Organs, 2023.
• Lee SHT et al. Effect of obesity on outcomes after arteriovenous fistula creation. Annals of Vascular Surgery, 2023.
• Fong KY et al. Sirolimus-eluting stents for below-the-knee arterial disease. Journal of Vascular Surgery, 2023.
• Sule J et al. Hybrid type II and frozen elephant trunk repair in acute Stanford type A aortic dissection. Scandinavian Cardiovascular Journal, 2022.
• Ng JJ et al. Emerging trends in endovascular aneurysm repair. European Journal of Vascular and Endovascular Surgery, 2022.

A full list of publications is available at www.drandrewchoong.com/publications.

Among the earliest surgeons in Singapore to perform visceral hybrid repair of thoracoabdominal aortic aneurysms, integrating open and endovascular techniques for complex aortic disease.
Introduced retroperitoneal open repair of abdominal aortic aneurysms at National University Heart Centre Singapore, expanding advanced open aortic surgery capabilities.
Performed endovenous radiofrequency ablation for varicose veins since 2008, with nearly two decades of experience in minimally invasive venous surgery.
Among the earliest adopters in Singapore of adhesive (glue) closure techniques, including VenaSeal™, for the treatment of varicose veins and chronic venous insufficiency.
Established walk-in, walk-out varicose vein surgery clinics at King’s College Hospital, pioneering safe, rapid-recovery venous treatment pathways.
Examiner and international faculty member for the European Board of Vascular Surgery Fellowship (FEBVS), contributing to specialist training and standards in vascular surgery.

• Founding Member and Past Vice-President, Society of Vascular and Endovascular Surgeons of Singapore
• Fellow, European Board of Vascular Surgery, with Honours (Gold Medal)
• Fellow, Royal College of Surgeons of England
• Fellow, Academy of Medicine Singapore
• Member, Asian Society for Vascular Surgery