Seann William Scott

Seann William Scott has left rehab, according to UsMagazine.com.

The American Pie actor, 34, "completed a successful treatment program," his rep tells the site. "He is looking forward to beginning production next month on American Reunion for Universal Pictures."

Seann William Scott enters treatment for "personal issues"

Scott checked into an undisclosed facility last month for "health and personal issues."

Stifler's Mom's son will join co-stars Jason Biggs, Alyson Hannigan, and Tara Reid, among others, for the upcoming fourth American Pie film.