Education
Greenstein was born in Atlanta, Georgia, attended The Lovett School and Riverwood High School, and graduated from Tufts University in 1984 with a self-designed major in film and dance. His thesis was entitled Footage: Choreographic Approaches to Filmmaking in Theory and Practice.
Career
His writing and producing credits include Desperate Housewives, Parenthood, Will & Grace, Partners, Friends and Dream On. He has directed episodes of Desperate Housewives, Seasons 1-3 of the acclaimed web series Husbands, the series finale of BBC3 comedy Way to Go, and multiple episodes of Columbia Broadcasting System sitcoms Mom and The Odd Couple.
Membership
He is a member of the Writers Guild of America and Directors Guild of America.