later than 3 months before the individual attains such age. . (2) Social security beneficiaries Title XI of the Social Security Act ( 42 U.S.C. 1301 et seq. ) is amended by inserting after section 1144 the following new section: 1144A. Medicare enrollment notification and eligibility notices for Social Security beneficiaries prior to medicare eligibility (a) Notices (1) In general The Commissioner of Social Security shall distribute the notice to be provided pursuant to section 1143(a)(4), as may be modified under paragraph (2), to individuals entitled to monthly insurance benefits under title II in accordance with subsection (b). (2) Authority to modify notice The Secretary, in coordination with the Commissioner of Social Security, may modify the notice to be distributed under paragraph (1) as necessary to take into account the individuals described in such paragraph. (3) Posting of notice on websites The Commissioner of Social Security and the Secretary shall post the notice required to be distributed under paragraph (1) on the public internet website of the Social Security Administration and on Medicare.gov (or a successor website), respectively. (b) Timing Beginning not later than 2 years after the date of the enactment of this section, a notice required under subsection (a)(1) shall be mailed to an individual described in such subsection— (1) in the third month before the date on which such individual’s initial enrollment period begins as provided under section 1837