Health Affairs June 24, 2021
Abstract
Antitrust guidance specifies that participation in Medicare accountable care organizations (ACOs) is sufficient to meet clinical integration standards for separately owned providers to jointly negotiate with insurers. Accordingly, ACO participation may facilitate price increases through a less conventional, “softer” consolidation that would not be categorically challenged as price fixing. Using commercial claims and data on health system membership and ACO participation, we found some abrupt, large price increases for independent primary care practices that joined health system–led ACOs but were not acquired...
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