Best known for hosting the award winning and popular breakfast show on Today FM that ran from 7-9 AM called The Ian Dempsey Breakfast Show.
He performed his first radio show at his friend's house when he was only six years-old.
He was honored by being named a co-host of the Irish heats for the 2011 Special Olympics World Summer Games.
He has three children named Shane, Evan, and Aislinn with his wife, Ger.
Mario Rosenstock was a performer on The Ian Dempsey Breakfast Show.