Multi-stakeholder health care collaboratives are making progress in collecting and analyzing health care cost, resource use, and quality data from multiple payers across their communities. An important next step in this work is to report the information to local primary care practices, medical groups, and other provider organizations that own and/or manage physician practices. Physician organizations play a central role in controlling costs while delivering high-quality care, whether through direct patient care or by influencing the delivery of health care for a defined population. In order to play that role effectively, physician organizations must have information that is understandable, timely, relevant, and usable. This brief shares the findings from interviews with clinical and administrative leaders at physician organizations in Maine and Oregon, where multi-stakeholder collaboratives have been pioneers in privately reporting data to local physician organizations.