Allen guest-starred on several prime time series including an early episode of '' Airwolf '' for which he was nominated as ' Best Young Actor : Guest in a Series ' at the '' 6th Youth in Film Awards '' and '' St. Elsewhere '' , in which he played autistic child Tommy Westphall ( 1983 – 88 ) . The series final episode , " The Last One " , ends with the indication that all of its storylines occurred in Tommy 's imagination . In 1983 , he appeared on '' Cutter to Houston '' , playing " a kid who got hurt and had to be given mouth-to-mouth and carried to the waiting chopper by Dr. Hal Wexler ( Alec Baldwin ) " . " I thought it was the greatest job I had ever gotten , " he later stated . Allen 's first regular role was as David Witherspoon on '' Our House '' ( 1986 – 88 ) . In 1989-90 , he had a recurring role as Zach in '' My Two Dads '' . Allen 's next contract role was Matthew Cooper in '' Dr. Quinn , Medicine Woman '' alongside Jane Seymour ( 1993 – 98 )
6th Youth in Film Awards
6th Youth in Film Awards
Chad Allen (actor)