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 Ming-Na Wen Actor Sherry Stringfield Dr. Susan Lewis Actor Mekhi Phifer Dr. Gregory Pratt Actor Sharif Atkins Actor Bruce Weitz Alderman John Bright Guest Star Marcello Thedford Leon Guest Star Tom Everett Scott Eric Wyczenski Guest Star Laura Cerón Guest Star Abraham Benrubi Jerry Markovic Guest Star Deezer D Nurse Malik McGrath Guest Star Troy Evans Frank Martin Guest Star Yvette Freeman Nurse Haleh Adams Guest Star Lily Mariye Nurse Lily Jarvik Guest Star Montae Russell Dwight Zadro Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer