ACTOR
Nick Gehlfuss
Known for Shameless · Chicago P.D. · Chicago Fire
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.
Snapshot 2026-10-15
- Born
- Jan 21, 1985
- Birthplace
- Cleveland, Ohio, USA
- Known For
- Acting
Biography
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.
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Known For
TV
ShamelessRobbie Pratt · 2011
★ 8.2
★ 8.2
TV
Chicago P.D.Will Halstead · 2014
★ 8.4
★ 8.4
TV
Chicago FireWill Halstead · 2012
★ 8.4
★ 8.4
TV
Person of InterestJack Hughes · 2011
★ 8.1
★ 8.1
TV
It's Always Sunny in PhiladelphiaSean · 2005
★ 8.2
★ 8.2
TV
Chicago MedDr. Will Halstead · 2015
★ 8.3
★ 8.3
TV
The Good WifeJesse · 2009
★ 7.6
★ 7.6
TV
Rizzoli & IslesJack Roberts · 2010
★ 7.9
★ 7.9
Filmography
Movies
Sam Steele and the Junior Detective AgencyMartinson Radio
2011
Love & MercyBruce Johnston
2015
EquityGabe
2016
Butterfly in the TypewriterJoel Fletcher
Television
It's Always Sunny in PhiladelphiaSean · 1 eps
2005
Army WivesSergeant Joe Corey · 1 eps
2007
The Good WifeJesse · 1 eps
2009
Rizzoli & IslesJack Roberts · 1 eps
2010
The GladesRandy Dillard · 1 eps
2010
Person of InterestJack Hughes · 1 eps
2011
ShamelessRobbie Pratt · 6 eps
2011
Chicago FireWill Halstead · 21 eps
2012
LongmireCameron Maddox · 3 eps
2012
The NewsroomRoss Kessler · 4 eps
2012
Chicago P.D.Will Halstead · 10 eps
2014
ConstantineThomas Galen · 1 eps
2014
Murder in the FirstMark Strauss · 1 eps
2014
Chicago MedDr. Will Halstead · 165 eps
2015
The Mystery of Matter: Search for the ElementsGlenn Seaborg · 1 eps
2015
CIABill Goodman · 16 eps
2026Photos
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