The mission of Mattapan Community Health Center is to improve the health and well-being of diverse populations in Mattapan and surrounding communities by providing exceptional primary care, preventive health services, and social services. Hours of Operation. Mon-Tue-Thursday 8:00 a.m. - 5:00 p.m Wed, 8:00 a.m.- 8:00 p.m. Fri, 8:30 a.m. - 5:00 p.m..