He is a native of Pittsburgh, and graduate of Michigan State University.  Mark spent 13 years working for Price Waterhouse and Ernst & Young LLP providing auditing and consulting services. He became a Certified Public Accountant in 1991.  He joined POISE in 2002 as its second President.

He serves on several boards including: Program to Aid Citizen Enterprise; Habitat for Humanity of Greater Pittsburgh; Boy Scouts LHC, Scout Reach; Kappa Scholarship Endowment Fund, Support America’s Teachers, and Carlow College President’s Advisory Council.  He has served on the following boards: Urban Youth Action, Community Investment Network, August Wilson Center, Bayer Center for Nonprofit Management, Sustainable Pittsburgh, Grantmakers of Western PA, and EQT GP Services LLC, a public corporation.  He is an active member of Deliverance Baptist Church where he serves as an Elder and Trustee.  He is a graduate of Leadership Pittsburgh XXII and a member of Kappa Alpha Psi Fraternity.

Mr. Lewis is the co-founder of the African American Funders Group, and the Sankofa Fund of Southwest PA a giving circle comprised of African Americans in the Pittsburgh region.