Private company

Centre for Addiction and Mental Health

Logo: Centre for Addiction and Mental Health, Public domain, via Wikimedia Commons4

Hospital in Ontario, Canada

The Centre for Addiction and Mental Health is a psychiatric teaching hospital located in Toronto and ten community locations throughout the province of Ontario, Canada. It reports being the largest research facility in Canada for mental health and addictions. The hospital was formed in 1998 from the amalgamation of four separate institutions – the Queen Street Mental Health Centre, the Clarke Institute of Psychiatry, the Addiction Research Foundation, and the Donwood Institute.2 It employed 3,781 people in 2025.1 Its revenue was C$735 million in 2025.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1998Founded1
CAMH Toronto6520
Photo: Nephron, CC BY-SA 3.0, via Wikimedia Commons6

The Centre for Addiction and Mental Health (CAMH, pronounced KAM-aytch, French: Centre de toxicomanie et de santé mentale) is a psychiatric teaching hospital located in Toronto and ten community locations throughout the province of Ontario, Canada. It reports being the largest research facility in Canada for mental health and addictions. The hospital was formed in 1998 from the amalgamation of four separate institutions – the Queen Street Mental Health Centre, the Clarke Institute of Psychiatry, the Addiction Research Foundation, and the Donwood Institute. It is Canada's largest mental health teaching hospital, and the only stand-alone psychiatric emergency department in Ontario. CAMH has 90 distinct clinical services across inpatient, outpatient, day treatment, and partial hospitalization models. CAMH has been the site of major advancements in psychiatric research, including the discovery of the Dopamine receptor D2.2

The story

CAMH was formed from the 1998 merger of the Queen Street Mental Health Centre with the Clarke Institute of Psychiatry, Addiction Research Foundation, and Donwood Institute.

Queen Street Mental Health Centre

The Queen Street Mental Health Centre opened as the Provincial Lunatic Asylum on 26 January 1850. It was subsequently renamed Asylum for the Insane, then Hospital for the Insane, then Ontario Hospital (1919), and then the Queen Street Mental Health Centre (1966). It had also been called the Toronto Lunatic Asylum and 999 Queen Street West.

The original building was designed by architect John George Howard and built by John Ritchey. An example of Neoclassical architecture, it featured a centralized dome and drew inspiration from the National Gallery in London, England. The walls surrounding the building grounds, designed by Frederick William Cumberland and Thomas Ridout, were installed in 1851 using brick with stone trim that reflected Howard's design for the building. Wings and outbuildings designed by Kivas Tully were added in the 1850s to address overcrowding.

The buildings were constructed in a series of rigid lines and sharp angles, consistent with the belief at the time that orderly physical structure would facilitate orderly mental states for the patients. High walls segregated the patients from the community, establishing a long-standing stigma about the facility.

The Queen Street Site of CAMH contained the Samuel A. Malcolmson Lecture Theatre, named for the site's Chief Psychiatrist and Clinical Director of Forensics. In 2009, however, Malcolmson was subject to a disciplinary hearing of Ontario's College of Physicians and Surgeons, following that he sexually abused a patient and fathered a child with her. Malcomson pleaded "no contest" and resigned his license to practice. The lecture hall was renamed the Queen Street Auditorium.

Reforms were made after a series of deaths at the Queen Street Mental Health Centre and newspaper accounts of involuntary drug treatment, electroshock therapy, and prison-like conditions.

Clarke Institute of Psychiatry

The institute was founded in 1966 and officially opened by Ontario Premier John P. Robarts. It was named the Clarke Institute of Psychiatry, after Charles Kirk Clarke, a pioneer in mental health in Canada. The institute took over the clinical, teaching, and research functions of the Toronto Psychiatric Hospital, located at 2 Surrey Place, which opened in 1925 under Clarence B. Farrar. The Institute served as the main psychiatry teaching hospital for the University of Toronto and was the headquarters for the Department of Psychiatry in the Faculty of Medicine. The first Medical and Executive Director of the Clarke was Charles Roberts, and the first Psychiatrist-in-Chief (and Professor and Head of the Department of Psychiatry at the University of Toronto) was Aldwyn B. Stokes. When Stokes retired in 1967, the administration was reorganized, and Robin Hunter became Medical Director and Psychiatrist-in-Chief.

Fredrick H. Lowy served as Psychiatrist-in-Chief of the Clarke from 1974 until 1980, followed by Vivian Rakoff from 1980 to 1990, and Paul E. Garfinkel from 1990 until the Clarke's 1998 merger into CAMH.

Read the full text

Upon its merger into CAMH in 1998, the Clarke building become known as the CAMH College Street site. Conrad Black has been a generous supporter of the Clarke Institute of Psychiatry.

Rent increase

In 2015, CAMH's facilities at the College St. site were put in jeopardy following notice of a rent increase from $1.2 million to $4 million per year, at the renewal of its 20-year lease. CAMH valued its property at $25 million, whereas the hospital's landlord, Brookfield Asset Management, valued it at $100 million. Brookfield turned down CBC's interview requests. A government arbitrator was appointed who valued the property at $55 million, yielding a rent increase that CAMH was reportedly able to pay.

Addiction Research Foundation

The Addiction Research Foundation (ARF), then named the Alcoholism Research Foundation was founded in 1949, when H. David Archibald, who had studied at the School of Alcohol Studies at Yale University, was hired by the Liquor Control Board of Ontario. His mandate was to determine the scope of alcoholism in Ontario. He was named executive director when ARF opened and remained in that post until 1976. Focusing initially on outpatient treatment, their first facility was Brookside Hospital in 1951, expanding to branch offices and new locations in 1954, the same year they set up in-house research. In 1961, formally renamed the Alcoholism and Drug Addiction Research Foundation of Ontario, ARF expanded its mission to include drugs. In 1971, they expanded to a clinical teaching hospital called the Clinical Research and Treatment Institute. In 1978 ARF opened the School for Addiction Studies and expanded their international role in policy development and research. Following provincial hospital restructuring in the 1990s, ARF was folded in 1998 into CAMH.

Donwood Institute

In 1946, R. Gordon Bell opened a clinic in his own home for people needing mental health services. There existed an Ontario statute allowing doctors to take up to four patients into their homes without a hospital license. To his surprise, his only patients all suffered from alcoholism. It soon became necessary to move to larger facilities. To expand capacity, Bell opened Shadow Brook, which operated from 1947 to 1954, and then the Bell Clinic, which operated from 1954 to 1966. The Donwood Institute then opened in 1967, with 47 beds and a 4-month waiting list in the 1980s. Still focused on substance use, it claimed a 65% recovery rate for general population and an 85% recovery rate among physicians with addictions.

CAMH Queen St. Site Redevelopment

CAMH has been undergoing a three phase redevelopment centered at its Queen Street site, with four goals:

1) Deliver a new model of care and provide a healthy environment that promotes recovery;

2) Bring together the best research, clinical, education, health promotion, and policy experts in one place to change the future of mental health and addictions;

3) Revitalize the City of Toronto by opening up their site and by creating an inclusive new nine-block neighbourhood that benefits all and,

4) Change attitudes by breaking down barriers to eliminate the stigma of mental health. Phase 1A was undertaken by Eastern Construction and completed in 2008 and Phase 1B was undertaken by Carillion and completed in 2012. Phase 1C is being undertaken by PCL Construction and is expected to be complete in 2020.

In 2008, CAMH announced the completion of four new buildings (forming Phase 1A of the project) to accommodate CAMH's Addiction and Mood & Anxiety Programs.

The Campbell Family Mental Health Research Institute was established with a $30 million donation in 2011 from Linda Campbell, Gaye Farncombe, and Susan Grange, each granddaughters of Canadian magnate Roy Thomson and nieces of Ken Thomson. CAMH CEO, Catherine Zahn, said research on the brain is the most promising pathway to progress in mental illness research. Bell donated $10 million to CAMH in 2011, reportedly the largest corporate gift in Canada to mental illness.

In 2012, CAMH announced the completion of three new buildings (forming Phase 1B of the project): the Bell Gateway Building for the central administration, a utilities and parking building, and the Intergenerational Wellness Centre which includes 12 new beds for youth ages 14–18.

Margaret McCain, the former lieutenant-governor of New Brunswick and widow of McCain Foods co-founder Wallace McCain, donated $10 million to CAMH in 2012 to establish the Margaret and Wallace McCain Centre for Child, Youth and Family Mental Health. In 2013, the Slaight Family donated to $50 million to health care institutions, of which CAMH received $10 million. The donation permitted the opening of a centre dedicated to identifying and treating early signs of mental illness in youth.

In 2014, philanthropist and business executive Andrew Fass donated $1,000,000 to CAMH for the hospital to create a wellness program for its staff. In 2016, Fass withdrew his donation, saying that CAMH was unable to show how they were spending the money. The grant was to be used for CAMH's "Well@Work" program, an initiative to provide Canadian workplaces with training to identify risks of mental illness and strategies to support employees in need.

CAMH opened the Emergency Department in 2014, funded by a $2.5 million private donation and a $4.2 million grant from the Ontario Ministry of Health and Long-Term Care.

In 2016, CAMH constructed a sweat lodge for Aboriginal patients in order to promote spiritual, physical, and emotional healing. Also in 2016, CAMH opened walk-in clinics for youth.

In 2020, the eight-storey, 110 patient bed McCain Complex Care & Recovery Building and five-storey 125 patient bed Crisis & Critical Care Building and 24-hour psychiatric emergency department were opened.

From Wikipedia’s article on Centre for Addiction and Mental Health, shared under CC BY-SA 4.0.5

Products and brands

CAMH reports being the largest research facility in Canada for mental health and addictions, including over 100 scientists over 150 research trainees. In the 2014-2015 fiscal year, CAMH received $44,384,230 in research funding and published more than 500 research articles.

From Wikipedia’s article on Centre for Addiction and Mental Health, shared under CC BY-SA 4.0.5

Employees over time

Centre for Addiction and Mental Health employees by year13.8K in 2025+38% since 2016
01.0K2.0K3.0K4.0K2016: 2.7K2.7K20162017: 2.6K2.6K2017−5%2018: 2.9K2.9K2018+12%2019: 3.0K3.0K2019+2%2020: 3.1K3.1K2020+4%2021: 3.2K3.2K2021+1%2022: 3.3K3.3K2022+4%2023: 3.4K3.4K2023+4%2024: 3.6K3.6K2024+5%2025: 3.8K3.8K2025+6%
  • 20253,7811
  • 20243,5771
  • 20233,3961
  • 20223,2801
  • 20213,1511
  • 20203,1081
  • 20192,9861
  • 20182,9151

Revenue over time

As stated on Wikidata, in the currency reported.

Revenue

Centre for Addiction and Mental Health revenue by year1734.7M CAD in 2025+86% since 2016
0200.0M CAD400.0M CAD600.0M CAD800.0M CAD2016: 395.6M CAD395.6M CAD20162017: 407.8M CAD407.8M CAD2017+3%2018: 424.4M CAD424.4M CAD2018+4%2019: 456.8M CAD456.8M CAD2019+8%2020: 475.0M CAD475.0M CAD2020+4%2021: 498.6M CAD498.6M CAD2021+5%2022: 529.8M CAD529.8M CAD2022+6%2023: 585.5M CAD585.5M CAD2023+11%2024: 648.8M CAD648.8M CAD2024+11%2025: 734.7M CAD734.7M CAD2025+13%
  • 2025734.7M CAD1
  • 2024648.8M CAD1
  • 2023585.5M CAD1
  • 2022529.8M CAD1
  • 2021498.6M CAD1
  • 2020475.0M CAD1

Timeline

  1. 1998Founded Founded1