A key goal of health reform in the US is to improve population health through expanded access to health insurance. Demand for high-quality, cost-effective, basic health services is anticipated to grow, particularly for underserved populations. However, there is also growing concern about the impact of health professions scope of practice on access, quality, and cost of health services. Since health professions regulation falls under state jurisdiction, the legal scope of practice for a health profession is typically defined in a state-specific scope of practice act. These acts describe the services that professionals can provide and under what conditions they can be provided. Scope of practice acts also define the requirements for education and training, certification and licensure, and supervision. Restrictive legal scopes of practice often serve as a barrier to effective and efficient delivery of health services.