Our sites are open for medical services Monday through Friday from 8:00 AM to 5:00 PM. Additionally, the walk-in clinic at the Sumterville location is open from 8:00 AM to 2:00 PM on Saturdays. Our dental department in Sumterville offers extended hours and is open Monday through Friday from 7:30 AM to 6:00 PM. We are closed most major holidays..