After multiple years of mandated disclosure of negotiated hospital-insurer rates, those of us who follow the buy-and-bill channel might have expected transparency to reduce drug price variability, lower hospital markups, and accelerate adoption of lower-cost biosimilars. Alas, that’s not what the latest data reveal. DCI’s analysis of four national commercial insurers—Aetna, Anthem, Cigna, and UnitedHealthcare—and 26 hospitals found that: Hospitals still earn significant markups over a...