Dr Poh Guo Han Aaron practices as a general surgeon at Mount Elizabeth Hospital, with a subspecialty in colorectal and trauma surgery. He focuses on minimally invasive procedures for colorectal, gallbladder, and hernia conditions, and manages complex anorectal disorders such as anal fistula, haemorrhoids, and rectal prolapse. After graduating from the National University of Singapore in 2004, he pursued advanced surgical training in the UK, including laparoscopic and inflammatory bowel disease surgery. The Ministry of Health Singapore accredited him as a general surgery specialist in 2015.