Acting
John Allen Nelson
San Antonio, Texas, USABorn 1959 (66 years old)
From Wikipedia, the free encyclopedia John Allen Nelson (born August 28, 1959) is an American actor.
11
Films
34
TV Shows
2
Crew Credits
Known For
45 Credits
Grey's Anatomy
as Arthur Soltanoff
2005
NCIS
as Lloyd Manditsky
2003
CSI: Crime Scene Investigation
as Roger Gentry
2000
Criminal Minds
as Dan Murphy
2005
Friends
as Paul
1994
24
as Walt Cummings
2001
Castle
as Walter Dennis
2009
CSI: Miami
as Mike Rydell
2002
CSI: Miami
as Todd Peterson
2002
Murder, She Wrote
as Tod Sterling
1984
Rizzoli & Isles
as Robby Davenport
2010
Without a Trace
as Mark Duncan
2002
