Anthony Edwards Dr. Mark Greene Actor Eriq La Salle Dr. Peter Benton Actor Noah Wyle Dr. John Carter Actor Laura Innes Dr. Kerry Weaver Actor Alex Kingston Dr. Elizabeth Corday Actor Goran Visnjic Dr. Luka Kovac Actor Maura Tierney Abby Lockhart Actor Paul McCrane Robert Romano Actor Michael Michele Cleo Finch Actor Ming-Na Wen Actor Sherry Stringfield Dr. Susan Lewis Actor Nina Landey Vicki Guest Star Sharif Atkins Guest Star Julie Delpy Nicole Guest Star Amy Jo Johnson Jill Guest Star Jack Johnson Daniel Pendry Guest Star Lisa Vidal Sandy Lopez Guest Star Roma Maffia Ms. Prager Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Deezer D Nurse Malik McGrath Guest Star Yvette Freeman Nurse Haleh Adams Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer