Toronto East Health Network

Toronto East Health Network (TEHN) is a publicly funded hospital network operating in the eastern part of Toronto. It provides a range of acute care services including emergency medicine, inpatient hospitalization, outpatient clinics, surgical procedures, rehabilitation, and mental health support. The network also delivers community health programs aimed at prevention and chronic disease management. Michael Garron Hospital serves as the flagship acute care site within TEHN. TEHN offers specialized clinical programs such as cardiac care, oncology, and women’s health services. By integrating hospital and community care, the network aims to improve continuity of care for its diverse patient population. Collaboration with local health partners and social service agencies is a key aspect of its service model. The organization emphasizes patient-centered care and strives to meet the health needs of the communities it serves.

In October 2023, TEHN experienced a data security incident at Michael Garron Hospital involving unauthorized access to patient, staff, clinician, and donor information. The organization activated a Code Grey response, engaged third‑party cybersecurity experts, and implemented safeguards while keeping clinical operations running. Affected individuals were offered two years of credit monitoring, and the incident was reported to law enforcement and provincial privacy regulators. TEHN confirmed that its core patient health database was not compromised and that the event was unrelated to a separate cyberattack affecting other Ontario hospitals that share a different IT provider. The incident highlighted TEHN’s focus on privacy protection and its capacity to coordinate a rapid, organized response under emergency protocols. As a publicly funded entity, TEHN operates under the oversight of the Ontario Ministry of Health and is accountable to provincial health legislation. Its structural arrangement places Michael Garron Hospital as the primary acute care facility, with additional sites and programs governed by the network’s board and administrative leadership. These attributes underscore TEHN’s role as a regional health provider committed to maintaining both clinical excellence and information security.