In September 2002, Tabb became Sheridan Dean of University Libraries and director of the Sheridan Libraries at the Johns Hopkins University. In July 2006, Tabb was appointed for a two-year term as Vice Provost for the Arts at JHU.
In September 2002, Tabb took on the role of Sheridan Dean of University Libraries and head of the Sheridan Libraries at Johns Hopkins University. In July 2006, Tabb was appointed to a two-year term as Vice Provost for the Arts at JHU.