An OIG report on the Medicare Prescription Drug Plan Finder found that Plan Finder Part D drug price data frequently overestimate the charges to beneficiaries when they have their prescriptions filled at the pharmacy. Specifically, based on a review of 10 drugs commonly used by seniors, the Plan Finder drug prices were a median of 28% higher than actual drug costs, and exceeded actual drug costs for 92% of claims. The OIG recommended that CMS take steps to ensure that Plan Finder drug prices accurately reflect actual drug costs.