As the nation's largest philanthropy devoted solely to the public's health, we have a unique capability and responsibility to confront the most pressing health and health care problems threatening our society. Our efforts focus on improving both the health of everyone in America and their health care—how it's delivered, how it's paid for, and how well it does for patients and their families. As we invest in improving systems through which people receive care and in fostering environments that promote health and prevent disease and injury, we expect to achieve comprehensive, meaningful, and timely change.