MELVILLE, N.Y.--(BUSINESS WIRE)--OSI Pharmaceuticals, Inc. (NASDAQ: OSIP) announced today that Michael G. Atieh, Executive Vice President and CFO of OSI Pharmaceuticals, will present at the Citi Global Healthcare Conference in New York, NY on Thursday, May 22, 2008 at 10:30am (EDT). Mr. Atieh will provide an overview on the Company’s product portfolio and business developments.