- Charles E. Martin, Ph.D. Clinical Psychologist Knoxville Office: Madisonville Office: 111 Center Park Drive 615 Warren Street Suite 1300 (Behind the Post Office) Knoxville, TN 37922 Madisonville, TN 37354 Telephone (865) 690-9998 Telephone (423) 442-7090 Fax (865) 691-7364 Fax (865) 691-7364 www.Clinical-Psychologist.com www.Marriage-Counseling.com e-mail cmartin@Clinical-Psychologist.com Dr.www.clinical-psychologist.com