Ontario Shores Centre for Mental Health Sciences

Also filed as Whitby Mental Health Centre (2006–2008).

Ontario Sunshine List 2025 · 450 employees earning $100K+

Hospitals & Boards of Public Health

At a Glance
2025

Employee Count

450

2025 Sunshine List

Total Compensation

$58.9M

Salaries + taxable benefits

Average Salary

$130,417

2025 Sunshine List

Median Salary

$123,711

Half earn more, half less

Who makes the most at Ontario Shores Centre for Mental Health Sciences in 2025?

Karim Mamdani, Special Advisor to the Board and Chief Executive Officer, was paid $523,606 in 2025 — the highest total compensation among 450 Ontario Shores Centre for Mental Health Sciences employees on the Sunshine List; the median salary there was $123,711.

How has Ontario Shores Centre for Mental Health Sciences' Sunshine List changed?

Ontario Shores Centre for Mental Health Sciences listed 22 people in 2006 and 450 in 2025 — 20× as many; payroll on the list went from $3.5M to $58.9M, and the median salary moved from $172,463 to $123,711.

How many Ontario Shores Centre for Mental Health Sciences employees earn over $150,000? →

Salary Trend

Median salary by yearLine chart of 20 yearly values of median salary, from $172,463 in 2006 to $123,711 in 2025.$100K$125K$150K$175K$200K200620102014201720212025
Median salary, 2006–2025. Axis starts at $100,000, the Sunshine List disclosure threshold. That threshold has never been indexed to inflation, so this line can fall over time simply because more people newly cross it — not necessarily because pay fell.

Top Employees
2025

#1Karim Mamdani
$523,606
Special Advisor to the Board and Chief Executive Officer
#2John Chen
$465,343
President and Chief Executive Officer
#3Karen De Freitas
$392,549
Psychiatrist
#4Chekkera Shammi
$380,950
Psychiatrist
#5Christopher Tam
$368,482
Psychiatrist
#6Daniela Hlousek
$359,678
Psychiatrist
#7Daniel Mueller
$335,167
Physician In Chief
#8Vincci Tang
$303,605
Executive Vice-President, Finance and Support Services, Chief Financial Officer and Chief Information Officer
#9Sanaz Riahi
$302,533
Executive Vice-President, Transformation, Clinical Services and Chief Nursing Executive
#10Andrea Marshall
$251,719
Vice President Communications and Culture Engagement
#11Srigokulan Kandasamy
$214,014
Director, Digital Health Clinical Informatics and Project Management Office
#12Mark Rice
$213,087
Senior Director, Clinical Services
#13Anastasia Kalim
$197,743
Director,Administrative
#14Laurel Cyr
$195,126
Director, Enterprise Risk Management
#15Kimberly Johnston
$187,600
Director,Administrative
#16Marsha Bryan
$183,360
Director, Data and Analytics and Quality
#17Catherine Duivesteyn
$183,204
Director,Administrative
#18Camille Thomas
$182,419
Director, Human Resources, Occupational Health, Wellness and Safety
#19Timothy Pauley
$182,011
Director, Research and Academics
#20Claudia Nicolae
$181,057
Registered Nurse
#21Michael Lee
$180,951
Nurse Practitioner
#22Lorraine Patterson
$179,986
Psychologist
#23Brian Duggan
$179,180
Director, Information Technology
#24Andrea Gibas
$177,192
Psychologist
#25Susan Vettor
$176,671
Psychologist

See all 450 employees in 2025 →

Download CSV (2025) →Released by the Government of Ontario under the Public Sector Salary Disclosure Act, 1996. Compiled by SunshineList.

Biggest Year-over-Year Increases
2024 → 2025

John Chen at Ontario Shores Centre For Mental Health Sciences had the largest increase in disclosed pay on the 2025 Sunshine List: $310,195 to $456,426, up 47.1%.

John Chen+47.1%
President and Chief Executive Officer
$310,195 → $456,426
Max-Bede Okere+46.7%
Registered Nurse
$109,180 → $160,137
Karim Mamdani+9.6%
Special Advisor to the Board and Chief Executive Officer
$466,280 → $510,843
Lorraine Patterson+32.2%
Psychologist
$135,666 → $179,317
Catherine Kitching+37.9%
Registered Nurse
$104,189 → $143,682

A year-over-year increase or decrease in disclosed pay can include overtime, a retroactive payment, a vacation payout or severance, not only a change in base pay, rate, or role — the Sunshine List discloses total salary paid that year, not a pay rate. This list is ranked by the dollar increase, not by the percentage shown.

183 people were new to Ontario Shores Centre for Mental Health Sciences's list in 2025; 32 who were on it in 2024 were not. See the full 2025 roster →

See all pay increases at Ontario Shores Centre for Mental Health Sciences →

By Year
full lists

Top Positions
2025 · 5 or more people