How Medicare beneficiaries with Part D plans can help ensure their medications are covered

In a piece from Fortune entitled, How Medicare beneficiaries with Part D plans can help ensure their medications are covered,  Harris Assistant Prof. Zarek Brot-Goldberg's 2023 National Bureau of Economic Research study is cited: 

If you take a really expensive drug, you’re going to have to go through prior authorization,” says Brot-Goldberg. “You would never want prior authorization for things like statins and beta blockers that are cheap and everyone should be getting. Those don’t have prior authorization that often.”