10:00am-1:00pm. The Mobile Health Center travels to under-served areas of the community to bring essential primary care services dental prevention and wellness programs to residents who may not have easy access to traditional health care. For more information to view the full schedule or view an online tour of the vehicle visit them online. Calvert Library Prince Frederick, 850 Costley Way, 410-535-0291 or 301-855-1862. CalvertLibrary.info.