Allan Arbus

Allan Franklin Arbus was an American actor and photographer. He is most known for his role as psychiatrist Dr. Sidney Freedman on the CBS television series MASH.

Arbus was born in New York City, to a Jewish family, the son of stockbroker Harry Arbus and his wife Rose . He attended DeWitt Clinton High School in the Bronx, where he first developed an interest in acting while appearing in a student play.

Source: Wikipedia