CMS proposed Friday (Jan. 18) to share with insurers savings from lower Part D catastrophic spending in return for plans agreeing to penalties when they exceed spending targets. CMS has yet to release many of the demonstration details, including the level of savings shared with plans and the tools they may use to manage drug costs, and those details will determine whether plans participate in the demonstration, Thorn Run Partners Vice President Shea McCarthy said. Although CMS Administrator Seema Verma...