The U.S. government reports that Americans spent three point six-trillion dollars on healthcare in 20-18, with prescription drug spending up three percent year over year. That’s helped push drug-wholesaler, AmerisourceBergen past automakers GM and Ford into the number-10 spot on this year’s Fortune 500. AmerisourceBergen may not be a household name, but the Pennsylvania-based company is a leading behind-the-scenes player in the healthcare industry.