The Centre intégré universitaire de santé et de services sociaux de l’Est‑de‑l’Île‑de‑Montréal (CIUSSS‑EST) is a major Quebec public health network under the RUISSS‑UdeM umbrella. It comprises flagship institutions such as:

• Hôpital Maisonneuve‑Rosemont (HMR) — a university-affiliated acute-care hospital specializing in cardiology, oncology, ophthalmology, transplant, and vascular care 

• Institut universitaire en santé mentale de Montréal (IUSMM) — a pioneering psychiatric teaching and research hospital originally founded in 1873, now a hub for mental health innovation and integrated clinical services 

Affiliated with the University of Montreal, CIUSSS‑EST fulfills a tripartite mission: patient care, teaching, and translational research. It employs over 15,000 staff and 900 physicians