Learn more about OrthoVrginia's patient portal. Pay your bill by phone. Call 866-706-7846 — anytime — to check your balance and make a one-time payment. Previous Sideline Orthopedics and Sports Medicine Patients. For visits prior to February 1, 2021, call the billing office at 307-228-1005 Monday-Friday 8 a.m. to 5 p.m. Pay your bill by mail.