Online Bill Pay We provide our patients the option of paying invoices via our SoFHA website. With our online bill pay, you’ll be able to pay invoices at any time of the day or night. For billing questions, please call our Central Billing Office at (423) 794-2469. If your statement looks like this click here: Patient Notebook If your statement looks like this, you will need to call our office at (423) 794-2469 to make your payment. The pay online option is not available at this time. We are sorry for the inconvenience.