Frederick Mazer, M.D.,74, of Lexington on Monday, April 1, 2013. Beloved husband of Beth (Tannenbaum) Mazer. Devoted father of James and Peter. Cherished grandfather of Sasha, Finn and Jade. Dear brother of Michael, John and Linda Goldman. Services at Temple Isaiah, 55 Lincoln St., Lexington on Wednesday, April 3 at 11AM. Burial will follow in the Westview Cemetery, Lexington. Memorial observance will be at his late residence following burial and continuing on Thursday. In lieu of flowers, remembrances may be made to Summer Search Boston, 500 Amory St.#2, Jamaica Plain, MA 02130.