MinuteClinic South Portland, located inside CVS/pharmacy #806 at 51 Market Street, is a walk-in medical clinic. Services include routine vaccinations, health screenings, minor wound and injury treatment, physicals and more-- with no appointment needed. Our family nurse practitioners and physician assistants provide services for both adults and children, 18 months and older. MinuteClinic accepts most insurance plans and cash, checks, and credit cards.