Guest Stars Melinda McGraw as Dr. Greta Pryor Barbara Eve Harris as Lydia Doyle Josette Canilao as Naomi Toby Hemingway as Gabe Steve Harris as Beaumont Shannon Chan-Kent as Claire Omid Abtahi as Jake Co Starring Andres Joseph as Dr. Fleisher Tracy Waterhouse as Nurse Lindsay Julien Hyacinthe as Security Guard Bill Marchant as Gerry Nicole Anthony as Medical Officer Andy Nez as Frank Patricia Cullen as Lisa Jesse Reid as Tech Consultant Anthony Harrison as Senator Howe Anthony Shudra as Young Marshall