"Using Part D formulary files from 2020 -- 2025 [the authors] examined plan insulin coverage separately for Medicare Advantage Prescription Drug Plans and stand-alone Prescription Drug Plans. [They] found that plans are moving insulins to a single tier but not broadly changing their utilization management tool strategies.... This study demonstrates strategic adjustments that insurers may be making in response to policy changes; ongoing study will be needed to monitor access to and spending on insulin in Medicare as the market and policy context continue to evolve."  MORE >>