Book an appointment, call, or email us. Phone. MAIN LINE: 706-549-1663 BILLING Athens Orthopedic Clinic general billing questions, please contact Millenia Pay Services at 1-866-270-8965, If you have spoken with Millenia and have additional questions, contact AOC at 706-433-3205 Athens Orthopedic Therapy :general billing questions, contact Insight at 1-888-295-3892 (Mon-Fri 11 am-8 pm ....