Actually it's both. As well as pharmacy benefit managers, doctors, hospitals, and insurance companies. They all inflate prices. See http://truecostofhealthcare.

Actually it's both. As well as pharmacy benefit managers, doctors, hospitals, and insurance companies. They all inflate prices. See http://truecostofhealthcare.org/conclusion/ http://truecostofhealthcare.org/conclusion/ (scroll to the "Where is all this money going" section)