Become a Patient at InterMed: If you would like to become a patient at InterMed, please call ... To sign up for the MyInterMed Patient Portal please go here. ... South Portland, ME 04106 Phone: (207) 828-0361. Hours of Operation Monday – Friday, 8:30 a.m – 4:30 p.m. From the Maine Turnpike or I-295, take the ME-114 Maine Mall Rd/Jetport ....