Express Scripts overcharged postal workers by $45 million, audit says

Express Scripts, one of the largest pharmacy benefit managers in the country, overcharged U.S. Postal Service employees by a whopping $45 million for their prescription drugs during a recent five-year period, according to a federal audit.

The findings are likely to intensify scrutiny of the controversial role played by PBMs in the opaque pharmaceutical pricing system. The report, which was released in March but received little if any public attention, examined drug spending between 2016 and 2021 within the health plan that covers more than 200,000 unionized mail carriers and post office workers, as well as retirees.