The St. Josephs' Health System evolved from hospitals and other institutions created by the
Sisters of St. Joseph's
Hamilton branch such as
St. Joseph's Healthcare Hamilton and the St. Joseph's Villa. An external review concluded that 9 patients in the St. Joseph's Health System died by suicide in 2016 while being treated as patients or on a day pass. Two families of the deceased filed each filed a 8.5 million dollar
negligence lawsuit against the St. Joseph's Health System in October 2017. During the
COVID-19 pandemic in Ontario, St. Joseph's Villa had a COVID-19 outbreak starting November 2020, resulting in at least 55 infections and 8 deaths. On January 7, 2021, a day after
Niagara Health System terminated its CEO-sharing agreement with St. Joseph's Health System, Stewart was removed as President and CEO by the board of directors.
St. Mary's General Hospital in
Kitchener was previously a part of St. Joseph's Health System before its merger with
Grand River Hospital to form the
Waterloo Regional Health Network on April 1, 2025. SJHS supported the hospital merger and established a new entity, St. Mary's Health, on April 2, 2025 to provide home and community care in Waterloo Region. == External links ==