That's already happening, due to the poor way the COLA is figured.
For 2013, we're getting a measly 1.7% increase. Meanwhile:
Pardon my "senior" rant :)
Why are you paying a premium for Medicare Part A? You couldn't qualify for Medicare Part A due to a lack of contributions when working?
Medicare premiums for Part B only cover 25% of the costs of the program. The other 75%, by law, comes from the General Fund. In FY 2011, the General Fund paid $222 billion to cover Medicare Parts B and D (SMI) costs. Eventually, if not reformed, Medicare will consume the entire federal budget.