Guest Stars Charlie Semine as Nick Valentino K.K. Moggie as Dr. Gillian Jelani Patch Darragh as Tim Flanagan Margo Martindale as Nurse Klowden Kate Mulgrew as Jeannie Flanagan Peter Gerety as Jimmy Flanagan Michael Chernus as Ryan Flanagan Johnny Hopkins as Bobby Flanagan Jeff Hephner as Pete Boswick Ty Jones as Anesthesiologist Kristen Connolly as Carey Whitlow Anthony DeSando as Derek Whitlow Peter McRobbie as Dr. Melvoy Victoria Clark as Mrs. Simanski Lance Rubin as Trevor Wilensky Co Starring Alexandra Donhoeffner as Yelena Harris Tristan Laurence Perez as Paramedic #1 Dean Nolen as Merril Hammaker Laurence Blum as Police Officer J.W. Cortes as Police Officer Mike Houston as Officer Grant Andrew Ahrens as Firefighter