He is most familiar to audiences for playing Michael Conway on Sex and The City,[1][2] Dr. Levin in The Blacklist, Ronald Danzer in Gotham, Defense Attorney Swift in Law & Order, and Grant Ward in Madoff.
Koenig's career began to kick off after winning the 2001 Drama Desk Award for Rob Ackerman's hit play, Tabletop, which was met with unanimous critical praise.
His theatre work continued with acclaimed original runs in Dan Dietz's Clementine in the Lower 9,[32][33][34][35] The Flag Maker of Market Street and Blood Divided at Alabama Shakespeare Festival,[36] in revivals of David Mamet's Race,[37][38] A Moon for the Misbegotten at Virginia Stage Company,[39][40] Absurd Person Singular,[41][42] The Christmas Story,[43] Laughing Stock,[44][45][46][47] A Doll's House,[48][49] Heartbreak House,[50] The Seagull,[51] An Inspector Calls,[52] Present Laughter,[53] and a return to the Shakespeare Theatre to work with Michael Kahn again, 32 years after his debut, in Harold Pinter's The Collection.
[54][55][56][57] Off-Broadway his work has continued with The Actors Company Theatre in The Cocktail Party[58][59] and Incident at Vichy,[60][61][62][63] in staged readings at The Players Club with David Staller's Gingold Theatrical Group in The Apple Cart, Saint Joan, Caesar and Cleopatra, and In Good King Charles' Golden Days,[64][65][66][67] in Perfect Crime with Catherine Russell,[68] and in A.R.
[69] On Broadway he has performed in the Tony Award-winning play Oslo directed by Bartlett Sher,[70] Accent on Youth with David Hyde Pierce, and The Pitmen Painters.