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CRR Issues Brief on the Effect of Medicare Part D on Drugs and Pricing

On September 17, 2019, the Center for Retirement Research at Boston College (CRR) released its issue brief, Medicare Part D’s Effect on Evergreening, Generics, & Drug Prices.  In 2006, the Medicare Part D Prescription Drug Benefit was enacted which expanded drug coverage for Medicare beneficiaries through private plans approved by the federal government.  This brief examines the effect of Medicare Part D on prescription and generic drugs, and pricing.

The key findings include:

  • Medicare Part D may affect the behavior of brand-name and generic drug producers by increasing the demand and shifting the market control from manufacturers to insurers;
  • Brand-name drug companies may be more likely to maintain monopoly power by making slight changes to their drugs, known as “evergreening”;
  • Generic companies may be less likely to introduce alternative drugs due to less bargaining power than insurers;
  • Overall, Medicare Part D has increased evergreening and reduced the entry of generic drugs which has caused drug prices to rise; and
  • Generally, Medicare Part D has expanded drug coverage for individuals age 65 and over which helped to keep drug prices lower than they otherwise would have been without it.

The brief is available here.