The Fourth Edition of Changing the U.S. Health Care System addresses the key topics in health care policy and management, presenting evidence-based views of current issues. Each chapter is written by an expert in the field who integrates evidence to explain the current condition and presents support for needed change. The book examines all the levers in the setting and implementation of health policy, and includes extensive coverage of impact of the Affordable Care Act, particularly on Medicare, Medicaid, and large and small group insurance markets. Also new to this edition is expanded coverage of nursing, disease management, mental health, women's health, children's health, and care for the homeless.