Anchorage: 907-562-2277 Wasilla: 907-357-2267. Patient Portal Pay My Bill. Injury Walk-In Clinic; ... At OPA your health information is kept strictly confidential and is not released without your consent. ... please call us at 907.562.2277 and ask for help with the patient portal. Injury Walk-In Hours. Find Us. Make An Appointment. Anchorage ....