Mark Rosenthal is an American arts administrator. He has worked as curator of modern art at the Philadelphia Museum of Art and as curator of 20th-century art at the Solomon R. Guggenheim Museum in New York. He has also served as head of the department of 20th-century art at the National Gallery of Art in Washington, D.C. He is currently curator at the Menil Collection in Houston, Texas.
Source - University of Iowa http://www.clas.uiowa.edu/alumni/fellows/1999/rosenthal.shtml