The information about Dr. Soll referenced the Tennessee Medical Association. Here is the web page and official website and "about" section.
"The Tennessee Medical Association is the state’s largest professional association for physicians. We improve the health of Tennessee by bringing all physicians together in efforts to continually improve effectiveness of physician care and ensure proper policy to serve the best interests of patients and the profession.
Open to all medical doctors or doctors of osteopathy licensed to practice in Tennessee, TMA serves 9,000 members who also participate in local, regional and specialty medical societies throughout the state."