Pharmacy benefit managers are the middlemen in the prescription drug market. The Federal Trade Commission reports the revenue of four PBMs exceeds $1 trillion and they control 86% of the market.

According to Bloomberg, a top Cigna executive said it will prevent patients from paying the full list price for drugs, or more than their employer has contributed.

Trump's pick for HHS Secretary faces questions from the left and right over his health stances. But will that stop his ...