Nicholas Alan Gehlfuss is an American actor, known for his starring role as Dr. Will Halstead in NBC's medical drama Chicago Med. He appeared as Robbie Pratt in the fourth season of Showtime's comedy-drama Shameless.
Shameless
Series • 2011
Person of Interest
Chicago Fire
Series • 2012
Chicago P.D.
Series • 2014
Chicago Med
Series • 2015
It's Always Sunny in Philadelphia
Series • 2005
The Good Wife
Series • 2009
Rizzoli & Isles
Series • 2010
CIA
Series • 2026
Army Wives
Series • 2007
Longmire
The Newsroom
The Glades
Murder in the First
Constantine
Love & Mercy
Movie • 2015
The Mystery of Matter: Search for the Elements
Equity
Movie • 2016