Complex sentence: She is the the director/choreographer of the 2009 Kennedy Center and Broadway revival of the musical "Ragtime", and was the Associate Choreographer for the Broadway musical "High Society" (1998).
Split into simpler sentences: She is the the director/choreographer of the 2009 Kennedy Center and Broadway revival of the musical "Ragtime". Broadway Marcia was the Associate Choreographer for the Broadway musical "High Society" (1998).