Recently Highmark announced that it had purchased full control of Gateway Health, a company that serves more than 355,000 Pennsylvanians with health insurance. Highmark Wholecare will be the new name for Gateway Health’s goods. Highmark’s arrangement with Mercy Health’s parent firm, Trinity Health, was not made public. “This acquisition will help us further our mission and better serve current and future Medicaid and Medicare, members across Pennsylvania,” Highmark Health Plan President Deborah Rice-Johnson said in a statement. Highmark had owned 50% of Downtown-based Gateway with Livonia, Mich.-based Trinity Health subsidiary Mercy Health since 1992 when Gateway was created. Gateway is among the private insurers in Pennsylvania that are paid by the state to cover people with Medicaid or Medicare benefits.