The Heart Rhythm Program at Trillium Health Partners is the home of Electrophysiology in the western GTA. As a subspecialty of Cardiology, Electrophysiology is dedicated to the care and management of the heart’s specialized electrical system. The Heart Rhythm Program at Trillium Health Partners provides complete Electrophysiology care to the populations of Mississauga and Oakville plus the broader Peel and Halton Regions.