Nicola Mercer

Wellington-dufferin-guelph Health Unit/Medical Officer of Health and Chief Executive Officer

At a Glance
2025

Latest Salary

$356,341

2025

Total Compensation

$361,818

Incl. $5,477 benefits

Employer Rank

#1

Wellington-dufferin-guelph Health Unit

Years on List

18

2008–2025

Salary History

Salary by year, 2008–2025Line chart of 18 yearly values, from $193,254 in 2008 to $361,818 in 2025.$0$100K$200K$300K$400K200820122015201820212025

Full History
2008–2025

YearEmployerPositionSalaryBenefitsTotal
2025Wellington-Dufferin-Guelph Health UnitMedical Officer of Health and Chief Executive Officer$356,341$5,477$361,818
2024Wellington-Dufferin-Guelph Health UnitMedical Officer of Health and Chief Executive Officer$350,779$5,484$356,263
2023Wellington-Dufferin-Guelph Health Unit—$320,544$5,512$326,056
2022Wellington-Dufferin-Guelph Health UnitMedical Officer of Health / Chief Executive Officer$387,874$5,608$393,482
2021Wellington-Dufferin-Guelph Health UnitMedical Officer of Health and Chief Executive Officer$378,482$5,529$384,011
2020Wellington-Dufferin-Guelph Health UnitMedical Officer of Health and Chief Executive Officer$307,892$656$308,548
2019Wellington-Dufferin-Guelph Health UnitMedical Officer of Health/Chief Executive Officer$312,711$649$313,360
2018Wellington-Dufferin-Guelph Health UnitMedical Officer of Health/Chief Executive Officer/Medecin-hygieniste/Directrice generale$311,498$5,409$316,908
2017Wellington-Dufferin-Guelph Health Unit / Bureau De Santé Wellington Dufferin GuelphMedical Officer of Health/Chief Executive Officer / Médecin-hygiéniste/Directrice générale$301,340$5,429$306,770
2016Wellington-Dufferin-Guelph Health UnitMedical Officer of Health/Chief Executive Officer / Médecin-hygiéniste/Directrice générale$301,340$5,379$306,720
2015Wellington-Dufferin-Guelph Health UnitMedical Officer of Health/Chief Executive Officer / Médecin-hygiéniste/Directrice générale$318,205$655$318,860
2014Wellington-Dufferin-Guelph Health UnitMedical Officer of Health / Chief Executive Officer / Médecin-hygéniste / Directrice générale$304,786$778$305,564
2013Wellington-Dufferin-Guelph Health Unit / Conseil de Santé de Wellington-Dufferin-GuelphMedical Officer of Health/Chief Executive Officer / Médecin-hygéniste / Directrice générale$298,616$779$299,395
2012Wellington–Dufferin–Guelph Health Unit / Conseil de Santé de Wellington–Dufferin–GuelphMedical Officer of Health/ Chief Executive Officer /Médecin–hygéniste / Directrice générale$284,432$737$285,170
2011Wellington-Dufferin-Guelph Health Unit / Conseil de Santé de Wellington-Dufferin-GuelphMedical Officer of Health/Chief Executive Officer/Médecin-hygéniste/Directrice générale$288,515$921$289,436
2010Wellington-Dufferin-Guelph Health UnitMedical Officer of Health/Chief Executive Officer$249,166$823$249,989
2009Wellington-Dufferin-Guelph Health UnitActing Medical Officer of Health/Chief Executive Officer$241,602$406$242,008
2008Wellington-Dufferin-Guelph Health UnitActing Medical Officer of Health/Chief Executive Officer$193,154$100$193,254

Take-Home Pay
(After Tax) · 2025 estimate

Nicola Mercer was paid $356,341 in 2025; after federal and Ontario income tax that is roughly $205,549, an effective income-tax rate of about 40.8%. Among those listed as Medical Officer of Health and Chief Executive Officer in 2025, the median was $365,720; this salary sits about 3% below it. The name has been on the Sunshine List 18 years in all, first in 2008. After pension contributions (probably HOOPP in this sector), take-home is usually a further 7–10% lower.

Estimated net pay
~$205,549
Effective income-tax rate (excl. CPP/EI)
~40.8%
CPP + EI contributions
~$5,507
vs. 2025 Medical Officer of Health and Chief Executive Officer median
−3%

Where does $356,341 rank on the Sunshine List? →

Estimate only: 2025 federal and Ontario rates, basic personal amounts, Canada employment amount and CPP/EI credits; single, employment income only, salary treated as full-year income. Ignores pension contributions (OMERS, HOOPP, OTPP, OPTrust and similar plans lower actual take-home), union dues, RRSPs and benefits.

Also at Wellington-dufferin-guelph Health Unit

#1Matthew Tenenbaum
$318,125
Associate Medical Officer of Health
#2Christopher Beveridge
$203,829
Vice President, Health Protection and Emergency Preparedness
#3Rita Isley
$194,440
Vice President, Community Health; Chief Nursing Officer
#4Kyle Wilson
$191,615
Vice President, Information Services and Digital Innovation; Chief Privacy Officer and Chief Information Officer
#5David Kingma
$191,615
Chief Administrative Officer
#6Emerson Rajaram
$168,947
Chief Information Security Officer
#7Brian Herman
$168,897
Chief Financial Officer
#8Patryk Wardach
$168,897
Chief Human Resources Officer
#9Phil Wong
$154,793
Operations Director, Health Protection
#10Lisa Hebden
$147,294
Operations Director, Client Services
View all employees at Wellington-dufferin-guelph Health Unit →