About us. Premier Medical of SC is a Primary and Urgent Care Medical Office. Our mission is to positively influence patients, employees and communities by providing help when needed, remembering it os our privilege to do so. We have two locations that you would be scheduled to work at. Rivers Avenue in North Charleston. Folly Road on James Island. We are open 6 days a week. Monday through Friday, 8am - 7pm at both locations. Saturday, 8am - 2pm a...