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Definition of a Health System Used in AHRQ’s Compendium of U.S. Notably, organizations can be members of multiple health systems, such as a physician organization that participates in more than one accountable care organization.

For RAND, this excludes "horizontally integrated" health systems, such as systems consisting only of hospitals. For its work, a health system must have at least one acute care hospital and at least one physician organization. The RAND Center of Excellence defines a health system as two or more health care organizations affiliated with each other through shared ownership or a contracting relationship for payment and service delivery. RAND Center of Excellence’s Definition of a Health System In addition, health systems are required to include at least 1 general acute care hospital, 10 primary care physicians, and a total of 50 physicians all located within a single hospital referral region.

The National Bureau of Economic Research (NBER) Center of Excellence defines a health system as a group of healthcare organizations (e.g., physician practices, hospitals, skilled nursing facilities) that are jointly owned or managed (foundation models are considered a form of joint management). NBER Center of Excellence’s Definition of a Health System While independent practices and independent hospitals do not meet the definition of a system, Dartmouth is also studying these entities. Dartmouth is studying multiple levels within a system: individual practices, hospitals, and system leadership.ĭartmouth has identified systems and their component entities by looking at the formal corporate relationship among the entities. For the purposes of this definition, the group of physicians must include at least three primary care physicians. The Dartmouth College Center of Excellence defines a health system as an organization that consists of either at least one hospital plus at least one group of physicians or more than one group of physicians.

Dartmouth College Center of Excellence’s Definition of a Health System Below, each Center of Excellence has contributed its own definition as a starting point, as has AHRQ and the Coordinating Center, which it used to develop the Compendium of U.S. The first step in studying health systems is to develop a definition of what constitutes a "health system," which is expected to evolve over time.