Home People Ben Livingston Ben Livingston shows Ben Livingston shows Ben Livingston TV Shows (8) Mosaic (2018) As B. David Stocker, The Deuce (2017) As Dr. Steiner, Elementary (2012) As Coleman Brown, Blue Bloods (2010) As Gavin Sutherland, The Good Wife (2009) As David Merriman, Charlie Lawrence (2003) As Walter Ffentz, Law & Order: Special Victims Unit (1999) As Principal Dan Kenner, Frasier (1993) As Stage Manager,