Tennessee Orthopaedic Alliance is getting a new CEO. According to a news release, Rob Simmons will lead the state’s biggest orthopaedic surgery group, starting June 28. He previously served as chief operating officer at Twin Cities Orthopedics in Minneapolis. Nashville-based Tennessee Orthopaedic Alliance is the 11th-biggest physician group in Middle Tennessee, according to NBJ research, with 60 local physicians. Simmons succeeds Steve Wade, who is retiring after more than 13 years as CEO, during…