"[4] Levenson wrote the book for the musical Dear Evan Hansen which opened on Broadway in December 2016, after premiering at the Arena Stage in Washington, DC in 2015.

Directed by Daniel Sullivan the cast featured Jeremy Shamos, Kate Walsh and Maria Dizzia.

[9] His play Days of Rage opened at the Off-Broadway Second Stage Theater's Tony Kiser Theatre on October 2, 2018 with direction by Trip Cullman.

[10] Days of Rage was earlier presented at the Hartford Stage Brand New Play Festival in a reading in November 2011, directed by Darko Tresnjak.

[13] He served as showrunner for the FX biographical miniseries Fosse/Verdon about the lives of director-choreographer Bob Fosse and actor-singer Gwen Verdon.