Mekhi Phifer Dr. Gregory Pratt Actor Maura Tierney Abby Lockhart Actor Linda Cardellini Nurse Samantha Taggart Actor Goran Visnjic Dr. Luka Kovac Actor Parminder Nagra Dr. Neela Rasgotra Actor Shane West Actor Scott Grimes Dr. Archie Morris Actor Laura Innes Dr. Kerry Weaver Actor Danny Glover Charlie Pratt Sr. Guest Star Amy Aquino Dr. Janet Coburn Guest Star Tina Lifford Evelyn Pratt Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Deezer D Nurse Malik McGrath Guest Star April L. Hernandez Nurse Inez Guest Star Dominic Janes Alex Taggart Guest Star Erin Cottrell Claire Guest Star Suzanne Cryer Toni Stillman Guest Star Eric Lange Rod Stillman Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer