Greg Martinelli

Greg Martinelli

Adjunct Professor


Mr. Martinelli is the founder of the Law Offices of Gregory S. Martinelli, a boutique tax controversy law firm with offices in Malvern Pennsylvania and Philadelphia, Pennsylvania. Mr. Martinelli routinely represents businesses and individuals before the Internal Revenue Service in examinations, penalty disputes, collection matters, and administrative appeals. In addition, Mr. Martinelli frequently counsels tax practitioners on federal tax procedure matters.

Before opening his law firm, Mr. Martinelli was a senior director in BDO USA, LLP’s national tax controversy group. As a member of BDO USA, LLP’s national tax practice, Greg served as an internal resource to the firm’s U.S. tax practice, which is composed of approximately 50 offices located throughout the United States. In that regard, Greg fielded practice and procedure questions covering a variety of substantive tax law areas, including international tax, corporate tax, partnership tax, employment tax, and individual tax. Prior to joining BDO USA LLP, Mr. Martinelli was a member of Ernst & Young, LLP’s national tax controversy practice in Washington, D.C. During his time with Ernst & Young, LLP, Greg worked on several significant projects, which included designing and implementing a reportable transaction disclosure program for a Wall Street financial institution as well as handling a significant pre-filing agreement for a large multi-national corporation.

Mr. Martinelli frequently lectures on federal tax procedure topics and professional responsibility topics. He is a member of the Pennsylvania bar and the New Jersey bar. Mr. Martinelli is admitted to practice before the United States Tax Court, the United States Court of Appeals for the Third Circuit, the United States District Court for the District of New Jersey, and the United States District Court for the Eastern District of Pennsylvania.


B.A. (Philosophy) 1988, University of Notre Dame

J.D. 1991, Widener University School of Law

M.S.E.L. 1996, Vermont Law School

LL.M. (Taxation) 2003, Villanova University Charles Widger School of Law