Locations Chehalis Centralia Walk In Children's Dental Morton Olympia Onalaska Pe Ell Raymond Tenino Toledo Winlock Administration Centralia Centralia Walk-In Clinic - Medical Location: 1800 Cooks Hill Road, Suite G, Centralia, WA 98531 East Entrance of Providence Medical Plaza Due to COVID-19 Centralia Walk-In is providing respiratory symptom care as well as traditional walk-in care. We.