Six (6) stand-alone 2013 Medicare Part D prescription drug plans (or PDPs) qualify as full Low-Income Subsidy (LIS) $0 premium benchmark plans in California. Six Medicare Part D plans also qualified for the $0 benchmark premium in 2012, however the list of PDPs has changed slightly with the WellCare Classic no longer offered in 2012; the introduction of the AARP MedicareRx Saver Plus (PDP) and SmartD Rx Saver in 2013; and CVS Caremark Value plan becoming the SilverScript Basic plan.
A more detailed overview of the 2013 Medicare Part D plans in California that qualify for the full-LIS $0 premium can be found