WILLMAR — When CentraCare took over operations of Rice Memorial Hospital and merged its operations with the Affiliated Community Medical Centers regional physician group to create what was then called Carris Health, it made a commitment to the city of Willmar to invest $32 million in the Willmar market in the following 10 years. Eight years later, the investment has already totaled $45 million and will reach $50 million by the end of the calenda…