Our IUHSSC in short

The IUHSSC in short

170 institutions of the Quebec’s health and social services network were merged to create 13 integrated health and social services centres (IHSSC), and 9 integrated university health and social services centres (IUHSSC). On that day, the Montreal West Island integrated university health and social services centres (IUHSSC) emerged from the grouping of 7 health and social services institutions.

The IUHSSC serves the population of the West Island of Montreal , in addition to clients from the following facilities:


The Montréal West Island IUHSSC is the largest of the 5 IUHSSCS on the island of Montréal. It covers an area of 184 km2, including 8 cities and 4 boroughs, for a population of nearly 375,000 inhabitants.


Our IUHSSC serves a diverse clientele

Territorial: The territorial service area includes the territory of Dorval-Lachine-LaSalle and the West Island, as well as Ste. Anne’s Hospital and the West Montreal Rehabilitation Centre. The Grace Dart Extended Care Centre is also part of the Montréal West Island IUHSSC’s territorial service area because places in residential facilities are managed at the territorial level by each IUHSSC on the island of Montréal. 

Extraterritorial: This service area covers St. Mary’s Hospital Center, which is located within the territory of another IUHSSC (Centre-West), while being part of the Montréal West Island IUHSSC. 

Regional (throughout the island of Montréal) and supraregional (throughout the province): These service areas include 3 constituent institutions of the Montréal West Island IUHSSC. The responsibilities of Douglas Mental Health University Institute, Batshaw Youth and Family Centres and Ste. Anne’s Hospital go beyond the territorial service areas. 

Across Canada: The Residential Treatment Clinic for Operational Stress Injuries of Ste. Anne’s Hospital offers mental health care and superspecialized residential services (3rd line) to Canadian Armed Forces Veterans as well as both active and retired members of the Royal Canadian Mounted Police. Users are referred by operational stress injuries (OSI) clinics across Canada, as it is the only facility to provide in-patient services. The Mental Health and Addiction Programs Directorate’s OSI Program service offer is complemented by the OSI and pain clinics serving Western Quebec.


The Montreal West Island IUHSSC works with more than 800 community, regional, supraregional and federal partners such as municipalities, community organizations, the education sector, and many more! These partners are critical for improving access to care and services provided to the public.


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