1. Proportion of physicians in large group practices continued to grow in 2009–11;Welch;Health Aff,2013
2. Physician consolidation: rapid movement from small to large group practices, 2013–15;Muhlestein;Health Aff,2016
3. Young KD. More and more doctors abandoning private practice. WebMD. Accessed June 17, 2021. https://www.webmd.com/health-insurance/news/20210527/more-and-more-doctors-abandoning-private-practice.
4. Radiology practice consolidation: fewer but bigger groups over time;Rosenkrantz;J Am Coll Radiol,2020
5. About Physician Compare: An Overview | CMS. Accessed July 8, 2020 https://www.cms.gov/Medicare/Quality-Initiatives-Patient-Assessment-Instruments/physician-compare-initiative/About-Physician-Compare-An-Overview.