1. Requiring enhanced & accurate lists of (real) health providers act (a) In general Section 1852(c) of the Social Security Act ( 42 U.S.C. 1395w–22(c) ) is amended— (1) in paragraph (1)(C)— (A) by striking plan, and any and inserting plan, any ; and (B) by inserting before the period at the end: , and, in the case of a network-based plan (as defined in paragraph (3)(C)), for plan year 2026 and subsequent plan years, the information described in paragraph (3)(B) ; and (2) by adding at the end the following new paragraph: (3) Provider directory accuracy (A) In general For plan year 2026 and subsequent plan years, each MA organization offering a network-based plan (as defined in subparagraph (C)) shall, for each network-based plan offered by the organization— (i) maintain, on a publicly available internet website, an accurate provider directory that includes the information described in subparagraph (B); (ii) not less frequently than once every 90 days (or, in the case of a hospital or any other facility determined appropriate by the Secretary, at a lesser frequency specified by the Secretary but in no case less frequently than once every 12 months), verify the provider directory information of each provider listed in such directory and, if applicable, update such provider directory information; (iii) if the organization is unable to verify such information with respect to a provider, include in such directory an indication that the information of such provider may not be up to date; (iv) remove a provider from such directory within 5 business days if the organization determines that the provider is no longer a provider participating in the network of such plan