Patient Support. Schedule your appointment, Access the Patient Portal. Contacts and Locations. Get in touch with our office and communities. COVID-19 Info Center. Who We Are. Tanana Chiefs Conference(TCC) is an Alaska Native non-profit corporation, also organized as Dena' Nena' Henash or "Our Land Speaks". We work towards meeting the health and ...Employee Portal‧Careers @ TCC‧Contact Us‧About Us‧Services‧News.