Mark SchiffActor · Born April 20, 1952 · The Bronx, New York City, New York, USAIMDb Acted in 72000s2009Funny PeopleMark Schiff632006The Best of Carson, Volume 1MovieThe Emperor's New SchoolUrkon (voice) · 1 episode681990s1995Dr. Katz, Professional TherapistMark (voice) · 1 episode7719932 Stupid DogsThe Little Dog (voice) · 52 episodes711992Mad About YouMax, Leo · 1 episode681980s1988Empty NestThe Anesthesiologist · 1 episode64Other crew 11990s1995Dr. Katz, Professional TherapistAdditional Writing77Appearances22010s2017Jerry Before SeinfeldSelf761960s1962The Tonight Show Starring Johnny CarsonSelf · 1 episode82