Noridian Healthcare Solutions (Noridian) contracts with the Centers for Medicare & Medicaid Services (CMS) and is a CMS contractor under the authority granted in Sections 1842, 1862 (b) and 1874 of Title XVIII of the Social Security Act (the Act) (42 United States Code (U.S.C.) §§1395u, 1395y (b), and 1395kk).. As a CMS contractor, Noridian maintains the four (4) websites identified below ....