Dr Mark Hon Wah Ignatius received his medical degree (MBBS) from National University of Singapore (NUS) in Year 1994. He underwent his specialty training in Ear Nose & Throat (ENT) in Singapore under the National ENT Training programme. He completed his examinations in Surgery and was admitted as a Member of the Royal College of Surgeons of Edinburgh in 1999. In 2002, he obtained his Masters of Medicine degree from NUS in Otolaryngology and completed his Fellowship examinations in Otolaryngology from the Royal College of Surgeons and Physicians of Glasgow.

Dr Mark was awarded the SingHealth “Health Manpower Development Plan Award” in 2005 to do a fellowship in Sleep Surgery at Stanford University, USA. He trained under the leading pioneers of Sleep Surgery - Professor Richard Goode, A/Professor Nelson Powell and A/Professor Robert Riley - in 2006. They first described and refined many of the surgical procedures (currently in use today) for the treatment of Obstructive Sleep Apnoea. The Sleep Disorders Clinic at Stanford is also a leading clinical and research internationally centre for Sleep Medicine. Dr Mark was fortunate to be able to spend time there with leaders of Sleep Medicine, such as, Professor Christian Guilleminault, Dr Rafael Pelayo and Dr Anstella D Robinson, to benefit from their vast experience in the area of Sleep Medicine. He passed the American Board examinations in Sleep Medicine in 2006 and was certified a Sleep Specialist by the American Board of Sleep Medicine. This makes him one of a few ENT Specialists worldwide and the only ENT Surgeon in Singapore with this prestigious qualification.

His special interests include the treatment of Snoring, Obstructive Sleep Apnoea, Sleep Disorders, Nasal obstruction, Thyroid lumps and Cancers of the Head and Neck region.