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Home Our People John M. Mortenson

John M. Mortenson


Practice Leader, Assurance and Accounting, CPA

I'm a problem solver.


John is the partner-in-charge of our East Brunswick, NJ, office. He is a licensed certified public accountant in the state of New Jersey and has more than 20 years of professional experience. He provides accounting, auditing, tax and business advisory services to many industries, including pharma, biotech, insurance, manufacturing, distribution companies and construction. John also has experience working with SEC reporting companies.

A graduate of Fairleigh Dickinson University, John joined Withum in 1985. He is a member of the American Institute of Certified Public Accountants (AICPA) and the New Jersey Society of Certified Public Accountants (NJCPA).

In his community, John is President of the Board of Directors of Embrace Kids Foundation, a not-for-profit organization supporting children with cancer and blood disorders. He resides in Monmouth County, NJ.

Withum isn’t just a job— we’re a family, and we carry that spirit together in everything we do. We live the Withum Way. We are catalysts for growth and success.

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