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 Erik Palladino Dave Malucci Actor Ming-Na Wen Actor Sherry Stringfield Dr. Susan Lewis Actor Julie Delpy Nicole Guest Star Ellen Crawford Nurse Lydia Wright Guest Star Conni Marie Brazelton Nurse Connie Oligario Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Yvette Freeman Nurse Haleh Adams Guest Star Gedde Watanabe Nurse Yosh Takata Guest Star David Brisbin Dr. Alexander Babcock Guest Star Troy Evans Frank Martin Guest Star Mary-Pat Green Miss McDuffy Guest Star Khandi Alexander Jackie Robbins Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer