Ear, Nose and Throat (ENT) specialist surgeons work and specialise in the diagnosis and treatment of Ear, Nose and Throat and Head and Neck disorders. Medical and surgical services range from the treatment of sinusitis and tonsillitis to removal of tonsils, nasal obstruction and trauma's, cancerous growths or benign tumours and other complex head-and-neck surgeries.

Dr Gunawardena provides ENT specialist and surgical consulting services at Gosford and Woongarrah and operates at Gosford Private Hospital, Berkeley Vale Private Hospital and Gosford Public Hospital.