MELVILLE, N.Y.--(BUSINESS WIRE)--OSI Pharmaceuticals, Inc. (NASDAQ: OSIP) announced today that Michael G. Atieh, Executive Vice President and Chief Financial Officer of OSI Pharmaceuticals, will present at the Bank of America Health Care Conference in Las Vegas, NV on Thursday, May 31, 2007 at 1:20PM (Pacific Time). Mr. Atieh will provide an overview on the Company’s product portfolio and business developments.