Who are the 3 largest PBMs?
Who are the 3 largest PBMs?
They’ve traditionally been less visible to the public, but their influence has grown, with the three largest PBMs — UnitedHealth Group Inc.’s OptumRx, CVS Health Corp.’s CVS Caremark and Cigna Corp.’s Express Scripts — processing an estimated 77 percent of all prescription claims last year. Aug 26, 2021
