Guest Stars Roland Buck III as Dr. Noah Sexton Eddie Jemison as Dr. Stanley Stohl Arden Cho as Emily Choi Michel Gill as Robert Haywood Julie White as Tessa Davis Reed Birney as Greg Davis Maryann Plunkett as Catherine Covington Jose Antonio Garcia as Dan Kennet Co Starring Lorena Diaz as Nurse Doris Courtney Rioux as Paramedic Courtney Jeremy Shouldis as Dr. Marty Peterson Casey Tutton as Nurse Monique Lawson Tonray Ho as Nurse Leah Mia Park as Nurse Beth Cole Amanda Marcheschi as Nurse Dina Garston Laura Berner Taylor as Paramedic Isla Hacket Aaron Kirby as Sam Covington Rosie Moan as Lizzie Covington Atra Asdou as Rachel Wexler Joseff Stevenson as Martin Julie Beal as Jane Ryan McBride as Jacob Wexler Chris Amos as Chris Kierra Bunch as Sheila Megan Henricks as Amy Debbie Laumand-Blanc as Accident Victim Mom Brendan Sullivan as Accident Victim Dad Tsage Roberts as Lucy Marie Alexandre as Singer