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Headshot of Pat Tomlinson
Headshot of Pat tomlinson
As Mercer President, Pat has direct responsibility for overseeing Mercer’s Health, Wealth and Career global practices and the Operations & Technology (O&T) team. 

Pat also serves as Marsh McLennan US and Canada CEO, with responsibility for leading across businesses to address clients’ increasingly interconnected risk, strategy and people challenges. Additionally, he is President of Mercer US and Canada, where we serve approximately 10,000 domestic and multinational clients across the region, creating secure and rewarding futures for those clients and their employees.

Pat joined Mercer in 2014 as US and Canada Career business leader and, from 2018 to 2020, led the US East Market, where he guided Mercer's Health, Wealth, and Career businesses to meet ever-changing client needs. Prior to joining Mercer, he spent 17 years with Aon and served as an officer in the US Army.

Pat is a graduate of the United States Military Academy at West Point with a bachelor of science in sociology.