The brief’s key findings are:
- The Medicare Part D prescription drug program covers a large percentage of the elderly and their prescription costs.
- Strikingly, as of 2007, about 70 percent of the program’s enrollees already had drug coverage before joining Part D.
- Similarly, about 75 percent of Part D spending substituted for spending by private insurance or individuals.
- A full assessment of Part D’s overall social impact requires further research.