Cempa Community Care. 1000 East 3rd Street, Suite 300, Chattanooga, TN 37403. Primary Care Services: Monday - Thursday 8:00am to 5:00pm. Friday 8:00am to 2:00pm. Clinic Services is closed daily from 12:00 - 12:30 PM, except on Fridays. Staff are available for emergencies. Prevention Services..