We use cookies to improve your experience and optimize user-friendliness. Read our cookie policy for more information on the cookies we use and how to delete or block them. To continue browsing our site, please click accept.
Home Our People Peter A. Weitsen

Peter A. Weitsen

Emeritus Partner



Peter is an emeritus partner based in our East Brunswick, NJ, office and entered the public accounting profession over 25 years ago. He is a licensed certified public accountant in the state of New Jersey and specializes in taxation.

A graduate of Brooklyn College, where he earned his BA degree in economics, Peter also completed graduate courses at Baruch School of Business, City University of New York. He began his accounting career at Laventhol & Horwath after serving as an IRS agent for eight years. He was a founding partner of Mendlowitz Weitsen, LLP, which joined into Withum in 2005.  He is a member of the American Institute of Certified Public Accountants (AICPA) and the New Jersey Society of Certified Public Accountants (NJSCPA). Peter is a past president of the Middlesex/Somerset Chapter of the NJSCPA and a former chairperson of the Cooperation with the IRS Committee.  Peter currently presents to the NJSCPA as a member of the IRS practitioner Liaison Committee New Jersey.

He currently serves as treasurer for the Middlesex County Regional Chamber of Commerce and received the chamber’s "2002 Business Leader of the Year Award." In addition to co-authoring three books, Peter has written numerous articles and has been quoted in several publications throughout the country. He is also a frequent speaker before business and professional groups.

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.

Contact Me


How Can I Help You?

Interested in Learning More?

Interested In Withum?

Get news updates and event information from Withum