By: Katy Kroll
As "Chicago Med" enters its ninth season, the series is left with just three original cast members who have been part of the show since the very beginning. Marlyne Barrett (who plays Maggie Lockwood), Oliver Platt (Dr. Daniel Charles), and S. Epatha Merkerson (Sharon Goodwin) remain after Nick Gehlfuss, who portrayed Dr. Will Halstead, exited at the end of the previous season. Also on board since the start are writers and executive producers Diane Frolov and Andrew Schneider, married collaborators who share an Emmy for Outstanding Writing for their work on the quirky 1990s dramedy "Northern Exposure" and whose credits have also included "The Sopranos" and "Boardwalk Empire."