The GTA/905 Healthcare Alliance is the collective voice of acute care and mental health hospitals across the GTA/905 region - from Oshawa to Burlington and north to Newmarket. Alliance hospitals provide care in communities representing more than 25 per cent of Ontario's population.

The GTA/905 area is the fastest growing region in Ontario, accounting for more than half of Ontario's annual population growth. The GTA/905 Alliance represents the more than three million residents in the region to ensure that they get better care close to home.