Question: who guest starred on chicago med tonight?
Answer: Nick Gehlfuss as Dr. Will Halstead, Supervising Attending Emergency Physician. Yaya DaCosta as Emergency Department Nurse April Sexton. Torrey DeVitto as Dr. ...  Colin Donnell as Dr. ...  Brian Tee as LCDR Dr. ...  Marlyne Barrett as Maggie Lockwood, RN, ED Charge Nurse. Norma Kuhling as Dr. ...  S.