"The primary mission of the Philadelphia Department of Public Health is to promote and ensure the availability, accessibility and quality of preventive and personal health services necessary to protect and improve the health and well being of the Philadelphia community. As part of its work to fulfill this mission, the Department provides and monitors public health services including communicable disease prevention and treatment, food safety, and air quality control. In addition, the Department operates eight neighborhood district health centers that provide primary medical care to all city residents regardless of their ability to pay."