[3] Hogan began his acting career in theater, making his professional debut as Elliot in the original 1961 Off-Broadway production of Michael Shurtleff's Call Me by My Rightful Name with Robert Duvall and Joan Hackett.

In 1969, Hogan joined the cast of Days of Our Lives for a short time, portraying the character of Will Austin; in 1970, he returned to the show in the recurring role of Scott Banning, Sr., which he held for two years.

He continued to be active as a guest actor in television series throughout the 1970s, including The F.B.I., Gunsmoke, Hawaii Five-O, M*A*S*H, Mission: Impossible, Mork & Mindy, The Mary Tyler Moore Show, The Rockford Files, and Barnaby Jones, among others.

He also played the recurring characters of Burt Marshall on General Hospital (1973), LCDR Sam Haller on Operation Petticoat (1978–1979), and Greg Stemple on Alice (1977–1982).

Hogan continued an active television career throughout the 1980s, appearing as a guest actor on such series as Airwolf, Barnaby Jones, The Incredible Hulk, Knight Rider, Laverne & Shirley, Magnum, P.I., Quincy M.E., Hill Street Blues, St.

He also appeared in numerous Off-Broadway productions, including Neal Bell's On the Bum (1992), Mark R. Shapiro's The Shattering (1996), Frank Pugliese's Hope is the Thing with Feathers (1998), William Kennedy's premiere of Grand View[4]and John Logan's Never the Sinner (1998).

He also appeared as a guest actor on the shows Remember WENN (1997), Cosby (1997), and Now and Again (1999), and in feature films such as Species II (1998) and Advice from a Caterpillar (1999).

He notably portrayed the recurring roles of Phil Carbone on Deadline (2000), Louis Sobotka on The Wire (2003), and Judge Hugo Bright on Law & Order (2003–2006).

He appeared in the films Maze (2000), Cupid & Cate (2000), Brooklyn Sonnet (2000), The Sleepy Time Gal (2001), Sweet Land (2005), Day Zero (2007), Universal Signs (2008), and Welcome to Academia (2009).