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Leadership and Staff

Donald Williamson, Executive Director

Professor Williamson teaches a number of subjects related to taxation, is director of the Masters of Science in Taxation degree program, and serves as executive director of the Kogod Tax Center.

He has also served as Adjunct Professor of Law at American University's Washington College of Law. Professor Williamson previously served as senior manager for international taxation at the National Tax Practice Office of KPMG in Washington, D.C., and as Professor-in-Residence at KPMG's Washington office. A certified public accountant, Williamson is a frequent lecturer to professional groups throughout the United States, and has held teaching appointments in Europe and China. 

He has published over 50 articles in professional and academic journals and was recognized by the Bureau of National Affairs as its outstanding author for 2007.


Robert Midler, Fellow

Robert Midler became a Fellow at Kogod Tax Center after retiring from Ernst & Young in 2011 as a director. He joined EY's National Tax Department in 1986 where he was associated at different points in his career with both the tax legislative/regulatory and communications groups.

At Kogod Tax Center, he works on a variety of projects, including surveys, alumni communications, web presence and the quarterly MST Breakfast Series program. Robert graduated from Miami University (B.A.) and Cleveland-Marshall College of Law (J.D.). He is a member of the Ohio and District of Columbia Bars.

rmidler@american.edu


Tom Ochsenschlager, Fellow

Tom Ochsenschlager became a Fellow at Kogod Tax Center in 2011 after retiring from the AICPA in May 2010. He joined the AICPA in 2004 as the Vice President of Taxation.

Currently, he is an adjunct professor at George Washington University's graduate business school teaching tax. Before his position as the VP of Taxation at the AICPA, Tom was also a Partner in the National Tax Office for Grant Thornton and a Principal at Arthur Young & Company. 

Tom graduated from Wabash College (B.A), Amos Tuck School of Business (M.B.A), University of Virginia (J.D.), and Georgetown University (M.L.T.). He is a member of the AICPA, Assistant Treasurer at the American Tax Policy Institute, and a Board Member at Community Tax Aid.