UNION CITY, Calif., Feb. 4, 2010 (GLOBE NEWSWIRE) -- Questcor Pharmaceuticals, Inc. (Nasdaq:QCOR) announced today that Jason Zielonka, M.D., (61), has been appointed to the position of Chief Medical Officer. Dr. Zielonka has accepted the Company’s offer to become Chief Medical Officer effective February 16, 2010 and will report directly to Don M. Bailey, President & Chief Executive Officer. He will lead Questcor’s Medical Affairs organization and related initiatives and is taking over these responsibilities from Steve Cartt (47), Executive Vice President, who has been leading the company’s Medical Affairs efforts since the function was created at Questcor in late 2007. In connection with this change, Steve Cartt has assumed the new title of Executive Vice President & Chief Business Officer.