Drs. David W. Bates, E. Francis Cook, and Arnold M. Epstein are Co-Directors of the PCE. The other principal faculty in the core and elective courses in recent years include Drs. John Ayanian, Heather Baer, Maureen Bisognano, Carlos Camargo, Karen Costenbader, Gary Curhan, Roger Davis, Scott Evans, Jonathan Einbinder, Jonathan Finkelstein, Michael Fischer, Garrett Fitzmaurice, Michael Gaziano, Donald Goldmann, Jennifer Haas, Patricia Hibberd, Albert Hofman, Myriam Hunink, Jeffrey Katz, Anthony Komaroff, Thomas Lee, Matthew Liang, Elena Losino, Edward Marcantonio, Ellen McCarthy, E. John Orav, George Reed, Sebastian Schneeweiss, Deborah Schrag, Uwe Siebert, Donald Simonson, Daniel Singer, Daniel Solomon, David Studdert, Marcia Testa, Christina Wee, and Joel Weissman.