Our One of Mercy's most significant contributions is to Health Care for the Homeless. Though a grant, Mercy provides free, anonymous HIV testing and counseling to the general public. The Medical Center donates the space for these services. Mercy FamilyCare also provides a certain amount of HIV counseling. Specially trained nurses work in partnership with the Baltimore City Police Department not only to treat victims of sexual assault with compassion, but also to collect forensic evidence for use in court.
Practitioners provide extensive education, especially to police and members of the legal system.
Mercy's newest justice initiative is the Mercy Family Violence Response Program. A trained clinician provides victim counseling and advocacy, staff education, and networking with area domestic violence services. Many of Mercy's personnel serve actively in their churches, synagogues, mosques, or other places of worship. They also serve on numerous boards and community service organizations. The Chesapeake Bay Foundation Mercy holds four or more four blood drives per year in partnership with the American Red Cross and hundreds of employees donated blood.