Leadership Jonathan Kipnis, PhD BIG Director Email: kipnis@wustl.edu Marco Colonna, MD Executive Team Email: mcolonna@wustl.edu David Holtzman, MD Executive Team Email: holtzman@wustl.edu Tracy Duckett Office Manager IV, BIG Center Phone: 314-273-2288 Email: duckettt@wustl.edu Bailey Hollingshead Admin Coordinator I, BIG Center Phone: 314-273-5124 Email: h.bailey@wustl.edu