As a PBM pharmacist, you fill prescriptions on behalf of a pharmacy benefit manager, which is a person or company that helps manage a program to provide a group of people—typically employees at one company—with prescription drugs. In this role, you may help negotiate prices with pharmaceutical manufacturers, evaluate contracts, and ship medicine through the mail or dedicated couriers. In some cases, you may even work in the same building as your clients—this is rare, but particularly large companies occasionally have on-site pharmacies run by a PBM. This job title refers to working as a pharmacist under a PBM and should not be confused with being the pharmacy benefit manager.