Greater Saint John Church 11425 Old Marlboro Pike Upper Marlboro, Maryland 20772 t: 301-574-5100 f: 301-574-5160 e: © Greater Saint John Church 2011 - 2015 webministry@saintjohn.net Office Hours:  Tuesday and Wednesday - 8:00 a.m. to 4:00 p.m. Thursday and Friday - 8:00 a.m. to 7:00 p.m. Saturday - 9:00 a.m. to 1:00 p.m.