Mountain Family Care Center (Non-Emergent Express Care) 310 Hospital Avenue Jefferson, NC 28640 Hours: Monday through Friday 7:45 a.m. to 9 p.m.; Saturday 9 a.m. to 5 p.m.; Sunday 11 a.m. to 5 p.m. Phone: 336-846-6322 Patient Portal and Secure Messaging To Your Provider and Staff Mount Jefferson Family Medicine utilizes AthenaHealth, INC. as ....