For over 15 years, the locally owned office of John M. Machen, D.D.S. has been beautifying the smiles of Tri-City and Kingsport area. When you're here, we work hard to put you at ease and make you as comfortable as possible. We provide quality dental care for you and your entire family, including small children. Whether you're in need of cosmetic, preventative or reconstructive care, our office can accommodate you.