Nick Gehlfuss stars as Dr. Will Halstead (brother of Det. Jay Halstead, played by Jesse Lee Soffer of “Chicago P.D.”) and balances the stresses of being the ER’s supervising attending physician with his complicated relationship with Dr. Natalie Manning (Torrey DeVitto), on NBC’s drama “Chicago Med.”   

Gehlfuss has had recurring roles in “Shameless,” “The Newsroom” and “Power” as well as guest spots on “It’s Always Sunny in Philadelphia,” “The Good Wife,” “Person of Interest” and “Royal Pains.”

He made his stage debut in New York in the Classic Stage Company’s produc...