SSA-L502 (Telephone Interview Letter) is used to schedule a telephone interview to be conducted with a beneficiary for the Centenarian Project, Gerontology Project, and the Medicare Non-Utilization Project (MNUP). For the Centenarian Project and MNUP access this notice and its Spanish translation in the Document Processing System (DPS). For the Gerontology Project, access this notice and its Spanish translation in StaRZ & StriPEs—The Next Generation (SSTNG). For more information about scheduling a Centenarian Interview, see GN 02602.510. For more information about scheduling a Gerontology interview, see SI 02309.006. For more information about scheduling a Medicare Non-Utilization Interview, see GN 02602.610.