MELVILLE, N.Y.--(BUSINESS WIRE)--March 2, 2006--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 Cowen & Co. Annual Healthcare Conference in Boston, MA on Thursday, March 9, 2006 at 8:50am Eastern Standard Time. Mr. Atieh will provide an overview on the Company's product portfolio and business developments.