ROi: HCA subsidiary buys St. Louis health care group

HealthTrust Purchasing Group L.P., an HCA Healthcare Inc. (NYSE: HCA) subsidiary, has bought St. Louis-based group purchasing organization Resource Optimization & Innovation, according to a news release. Terms of the deal were not disclosed. ROI (stylized ROi) is the health system-operated purchasing group for Mercy, one of the largest Catholic health systems in the country. Mercy operates more than 40 hospitals, according to its website. The deal will make HealthTrust the exclusive group...