Doctor's Profile
Dr Calvin Ong Jianming
General Surgery
Clinic
Colorectal Clinic Associates
Address
Mount Alvernia Hospital
820 Thomson Road
Medical Centre D #08-62
Singapore 574623
Clinic Hours
9am to 1pm & 2pm to 6pm (Mon – Fri)
9am to 1pm (Sat)
About
Dr Calvin Ong is a Senior Consultant with Colorectal Clinic Associates. He spent 15 years in Changi General Hospital prior to leaving for private practice. He subspecialises in colorectal and general surgery. His interests lie in minimally invasive cancer surgery, inflammatory bowel disease and pelvic floor disorders. He graduated with a Bachelor’s degree in medicine and surgery from the National University of Singapore (NUS) in 2008 and completed his Masters of Medicine (Surgery) in the same institute. He then completed his advanced specialist training in 2016 and became a fellow with the Royal college of surgeons of Edinburg. He also spent a year at the prestigious and world-renowned St Marks Hospital specialising in inflammatory bowel disease and pelvic floor disorders as part of his fellowship training.
Besides clinical duties, he has also been a clinical lecturer for Yong Loo Lin School of medicine since 2012 and been awarded the title of Adjunct Associate Professor with Duke /NUS. He has also been an active member of Singapore Colorectal Society since 2016 and was in the executive committee in 2022. Procedures he specialises in include laparoscopic and robotic colorectal operations for cancer and benign disease, laparoscopic gall bladder and appendix operations, gastroscopy and colonoscopy, laparoscopic hernia repair, rectal prolapse surgery, as well as surgery for fistulas and piles.