From the Broomstick of Julie Baak Pharmacy Benefit Manager s (PBM) are the middlemen that do none of the work and make most of the money.. Fun Fact: PBMs have their MBAs tell MDs which drugs (formulary) they can prescribe based on how much money the PBM can make instead of clinical efficiency and the welfare of the patient(s). These 'formularies' are created based on drug manufacturers ....