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S. Elizabeth Prudence Merkerson, better known by her stage name S. Epatha Merkerson, is an American actress. She is best known for her roles as Lieutenant Anita Van Buren on the NBC police drama Law & Order (1993–2010), for which she received three Primetime Emmy Awards, and as Dr. Sharon Goodwin on the NBC medical drama Chicago Med (2015–present), for which she has received two Primetime Emmy Award nominations.