To amend part C of title XVIII of the Social Security Act to reimburse Medicare+Choice plans located in the same metropolitan statistical area the same payment rate.

Amends part C (Medicare+Choice) of title XVIII (Medicare) of the Social Security Act (SSA) to provide that all the portions of each metropolitan statistical area (regardless of whether they are located in one or more States) shall be treated as a single Medicare+Choice payment area (so that plans located in the same area will be reimbursed at the same payment rate).