Provides for auto-enrollment of subsidy eligible individuals in Medicare operated PDPs.

Amends SSA title XIX (Medicaid) to provide for the use of 2005 as base in computing the state clawback provision.

Amends SSA title XVIII (Medicare) to: (1) eliminate cost-sharing for certain full-benefit dual eligibles, and the indexing on the price sharing for dual-eligibles and qualifying low income beneficiaries; (2) expedite low-income subsidies under the Medicare PDP; (3) increase permitted resources to obtain low-income subsidies; and (4) waive the late enrollment penalty for subsidy eligible individuals for first 24 months of non-enrollment.

Sets forth anti-fraud and abuse provisions.

Provides for protection of Social Security benefits against a decrease owing to part D Medicare premium increases.

Extends the annual enrollment periods of the Medicare PDP.

Prohibits a PDP sponsor from removing a covered part D drug from the plan formulary, or otherwise introduce a barrier to access to covered part D drugs, without advance notice.

Directs the Secretary to review benzodiazepine prescription policies to assure appropriateness and avoid abuse.

Eliminates the MA Regional Stabilization Fund and certain Medicare Advantage overpayments.

Requires prompt payment of clean claims by Medicare and Medicare Advantage PDPs.

Prohibits co-branding.

Provides for the: (1) payment of minimum dispensing fees to encourage use of generic drugs; and (2) provision of medication therapy management services.