Dr. Koay Cheng Boon leads cochlear implant, ENT, and head and neck surgery at Sunway Medical Centre. He earned his MBBS from the University of London in 1988 and completed FRCS qualifications in general surgery and ENT-head and neck surgery in the early 1990s. He performs advanced procedures such as cochlear implants, mastoid surgery, endoscopic sinus surgery, balloon sinoplasty, thyroid and salivary gland removal, rhinoplasty, and microlaryngoscopy. His areas of focus include managing sinusitis, hearing loss, head and neck tumors, dizziness, voice disorders, and sleep apnoea. He also trains internationally and contributes to the field through mentorship and involvement in professional surgical societies.