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Dr Calvin Ong Jianming brings over 15 years of surgical experience, with a strong clinical focus on colorectal and general surgery. He actively performs minimally invasive and advanced robotic procedures for a range of conditions, including inflammatory bowel disease, pelvic floor disorders, colorectal cancer, and hernia repair. He trained at renowned institutions both locally and overseas, including a fellowship at St Mark’s Hospital in the UK. Dr Ong also plays an active role in medical education and clinical research, contributing to the advancement of colorectal care in Singapore.