Guest Stars Debbie Allen as Dr. Catherine Avery Jasmine Guy as Gemma Larson Hayley Chase as Cassidy Gardner Crystal McCreary as Sabrina Webber Matt Orduna as Chris Webber Co Starring Frances Nichols as Nurse Karen Jeremiah Miller as Cecil Taylor Brian Maillard as Perfusionist Char Sidney as Paramedic #1 Charles Maceo as Paramedic #2 Carie Kawa as OB Nurse Diane Yang Kirk as Anesthesiologist Brandon Cienfuegos as Henry