Medicare Drug Subsidy Mainly Replacing Private Spending
Four of every five dollars the federal government spends under the Medicare Part D drug plan do not allow seniors to obtain drugs they could not otherwise afford. Instead, this spending mainly substitutes for money that seniors and their private insurers would have spent anyway.
[The NBER study by] authors Gary Engelhardt and Jonathan Gruber concluded that much of the new coverage and spending under Medicare Part D served to crowd out previous private insurance coverage: about 80 percent of Medicare’s spending on this program simply displaced private spending.
This finding is consistent with the NCPA’s previous research on the same topic, estimating that more than 90% of the new spending would replace existing private spending.