More than 55 percent of the U.S. population now lives in a local area with an accountable care organization (ACO), in which a group of providers is held accountable by a payer for the total cost and quality of care for a defined set of patients. The spread of ACOs, however, by no means ensures their success.
Significant questions remain about whether the goals of the model—better care at lower costs—will be achieved.
There are some signs that the ACO model—by rewarding provider organizations for implementing high quality mechanisms for care delivery that lower overall costs—is driving innovation in the marketplace. For example, the Montefiore ACO in New York City is using special scales in the homes of patients with congestive heart failure to monitor for changes in weight that could indicate trouble.
Walgreens has formed three ACOs and is using its retail pharmacies as low-cost care centers. In addition, the Beth Israel Deaconess Care Organization created a high-touch care management system in which nurse practitioners visit the ACO’s sickest patients at home to reduce the number of hospital readmissions.
Yet, there are also challenges inherent in the adoption and implementation of the ACO model. There have been several wide-ranging proposals on how to enhance accountable care, especially in Medicare, but we believe that developing policies to standardize measurement is an important first step.
First, we need to promote adoption of a core set of effective measures across payers. Current measures, such as screening for high blood pressure, are limited in scope and fail to incorporate important dimensions, including health outcomes meaningful to patients and the total cost of care for those within the ACO. Proposals for more advanced measures have been developed but not yet adopted, in part because of provider concerns about being held accountable for aspects of performance they do not fully control.
These issues could be addressed by operationalizing the concept of “shared accountability” through patient engagement and partnerships, as with local, multistakeholder community health coalitions, and embracing a core set of more challenging and meaningful metrics, such as functional health and total costs per capita.