Dr Loh graduated from the Faculty of Medicine, National University of Singapore. He underwent residency in Otolaryngology at the National University Hospital and subsequently trained in Head and Neck Cancer Surgery at the Princess Margaret Hospital and Toronto General Hospital in Canada. He is currently a Senior Consultant at the Department of Otolaryngology - Head & Neck Surgery. His practice is in Head and Neck Oncology. Dr Loh is also the Leader of Head & Neck Tumour Group at the National University Cancer Institute of Singapore as well as its Deputy Director (Clinical).
His practice is mainly in patients with cancers of the oral cavity, pharynx, larynx, thyroid and other sites, and head and neck tumours. The majority of Dr Loh’s cancer patients have nasopharyngeal carcinoma (NPC), the most common head and neck cancer in Singapore.
He leads the Head and Neck Tumour Board, where radiation and medical oncologists, together with surgical oncologists, decide on the stage and the treatment for the cancer patients. He performs surgery of the thyroid gland and parotid salivary gland and other major complicated surgery to treat cancers of the oral cavity, pharynx and larynx. Where it is suitable, he also treats cancer of the larynx using laser surgery. Dr Loh also performs complicated tumours of the anterior skull base, or tumours at the junction just below the brain.
Dr Loh also mentors a constant stream of elective students from overseas ranging from Australia to England, Netherlands and Germany, just to name a few. He is also a member of the Residents Advisory Committee that oversees the Otolaryngology specialty in Singapore. He was awarded the Yong Loo Lin School of Medicine Faculty Teaching Excellence Award and the NUS University Teaching Excellence Award in 2006 in recognition of his contribution to medical undergraduate teaching in NUS. He has also been awarded post graduate teaching excellence awards in 2011, 2012 and 2015.
Besides teaching and caring for patients, Dr Loh is also active in research. His main research is in the area of early diagnosis on Nasopharyngeal Carcinoma (NPC) and is focused on a screening programme for first-degree relatives of NPC patients. Dr Loh’s research is widely published with the majority centered on NPC.