Mackenzie Health Opened in 1963 (formerly York Central Hospital), Mackenzie Richmond Hill Hospital is a large community hospital located in Richmond Hill providing Emergency, Inpatient, Ambulatory, Continuing and Long-Term Care services to a community of over 500,000 residents in Southwest York Region. In 2009, the hospital received an expanded mandate from the Ministry of Health and Long-Term Care to plan for the further development of the existing Mackenzie Richmond Hill Hospital site and the building of a new hospital in Vaughan.

In addition to the services it currently provides to the community of Southwest York Region, Mackenzie Health is the District Stroke Centre for York Region and is home to a number of regional services including: the York Region Chronic Kidney Disease Program, York Region Domestic Assault and Sexual Assault Care Centre, and the York/Simcoe Behaviour Management and Autism Programs.