Anthony Edwards Dr. Mark Greene Actor George Clooney Dr. Doug Ross Actor Sherry Stringfield Dr. Susan Lewis Actor Eriq La Salle Dr. Peter Benton Actor Noah Wyle Dr. John Carter Actor Julianna Margulies Head Nurse Carol Hathaway Actor Abraham Benrubi Jerry Markovic Guest Star Jared Rushton Andy Bohlmeyer Guest Star Kathleen Wilhoite Chloe Lewis Guest Star Vondie Curtis-Hall Henry Colton, Rena Guest Star John Terry Dr. David 'Div' Cvetic Guest Star Graham Jarvis Francis Guest Star Mike Genovese Officer Al Grabarsky Guest Star Courtney Gains Ronnie - Chloe's Boyfriend Guest Star Linda Kerns Mrs. Bohlmeyer Guest Star Caroline Lagerfelt Andrea Guest Star