Dr. John Tan Choon Heng is a Consultant Vascular Surgeon at The Vein Clinic in Paragon. He graduated from NUS Medical School in 1987 and earned his Fellowship from the Royal College of Surgeons of Edinburgh in 1991. In 1996, he trained under Prof. Peter Bell at the Royal Leicester Infirmary to specialize in vein and arterial surgery. Dr. Tan was one of the first doctors in Southeast Asia to offer Endovenous Laser Treatment for varicose veins. He continues to train doctors across the region and regularly shares his expertise at international conferences.