If we can be of further assistance, please contact us through any of the following methods: Central Mailing Address: Vancouver Clinic. 700 NE 87th Avenue. Vancouver, WA 98664. Patient Service Center (Appointments, Primary Care Nurse Advice, etc.) 360-882-2778 | Available 7 a.m. to 7 p.m., Mon - Fri, and 8:30 a.m. to 12:30 p.m. on Saturday..