Yes, they do but the insurers don’t touch the drugs (unless they own a pharmacy too).
You know how a drug can be tier 2 ($25 copay) or tier 3 (20% coinsurance)? That often the manufacturer offering a lower price in exchange for easier and cheaper access for patients.
Drug companies can also rebate on the back end. If an insurance pays for 1,000 vials of drug, they get a 10% rebate. 2,000 vials, a 20% rebate.
You know how a drug can be tier 2 ($25 copay) or tier 3 (20% coinsurance)? That often the manufacturer offering a lower price in exchange for easier and cheaper access for patients.
Drug companies can also rebate on the back end. If an insurance pays for 1,000 vials of drug, they get a 10% rebate. 2,000 vials, a 20% rebate.