Acting
Thomas Philip O'Neill
5
Films
7
TV Shows
Known For
12 Credits
Law & Order
as Dr. Neil Mosbach
1990
Law & Order: Special Victims Unit
as Rick Donnelly
1999
FBI
as Neil Mosbach
2018
FBI
as Dr. Neil Mosbach
2018
FBI
as M.E. Dr. Neil Mosbach
2018
NCIS: New Orleans
as Eddie Oberman
2014
MINDHUNTER
as Leo Buchanan
2017
Mapplethorpe
as David Croland
2019
Black Mass
as FBI Wire Tech
2015
The School Duel
as Pastor Mark
2024
Endless Sea
2022
Writer's Block
as Matthew
2025