Mercy, a top U.S. health system, serves millions with quality care, 50+ hospitals, 1,000+ clinics, and $500M in free care in FY23. Mercy, a top U.S. health system, serves millions with quality care, 50+ hospitals, 1,000+ clinics, and $500M in free care in FY23. The Mercy Memorial Health Center Foundation exists to plan and implement a comprehensive fundraising program to exclusively benefit the missions, purposes and activities for Mercy Memorial Health Center so that it will flourish as the center of excellence in health care for the people of south central Oklahoma.