![]() ![]() Main Outcomes and Measures Measures of spending and utilization, including the charge and price (amount paid) per claim, new and unique patients, and total encounters. Data analyses were performed from March 2021 to February 2022.Įxposures Private equity acquisition of physician practices. The PE-acquired practices were compared with matched controls through year 2 after acquisition, using a difference-in-differences event study. Within each specialty, each private equity−acquired (PE-acquired) practice was matched with as many as 5 control practices based on the preacquisition number of unique patients, encounters, risk score, share of services billed out-of-network, and spending. Objective To examine changes in prices and utilization associated with private equity acquisitions of physician practices across multiple specialties.ĭesign, Settings, and Participants This was a difference-in-differences event study of US physician practices specialized in dermatology, gastroenterology, and ophthalmology that were acquired by private equity firms from 2016 to 2020. Importance Private equity acquisitions of physician practices in the US have been increasing rapidly however, the implications for health care delivery and spending are unclear. Shared Decision Making and Communication.Scientific Discovery and the Future of Medicine.Health Care Economics, Insurance, Payment.Clinical Implications of Basic Neuroscience.Challenges in Clinical Electrocardiography.Differential change in volume and spending of select services – Ophthalmology Differential change in volume and spending of select services – GastroenterologyĮFigure 9. ![]() Differential change in volume and spending of select services – DermatologyĮFigure 8. Differential change in practice patterns for PE practices and matched controls (Ophthalmology only)ĮFigure 7. Differential change in practice patterns for PE practices and matched controls (Gastroenterology only)ĮTable 12. Differential change in practice patterns for PE practices and matched controls (Dermatology only)ĮTable 11. Changes in practice patterns associated with PE acquisition, by quarter (Falsification test)ĮTable 10. ![]() Changes in practice patterns associated with PE acquisition, by quarter (Callaway & Sant’Anna (2021))ĮFigure 6. Changes in practice patterns associated with PE acquisition, by quarter (practice and year fixed effects)ĮFigure 5. Changes in practice patterns associated with PE acquisition, by quarter (MSA fixed effects)ĮFigure 4. Differential change in practice patterns for PE practices and matched controls (8 quarter preacquisition period)ĮFigure 3. Differential change in practice patterns for PE practices and matched controls (Unweighted)ĮTable 9. Differential change in practice patterns for PE practices and matched controls (Matching on specialty type only)ĮTable 8. Characteristics of PE acquired and non-PE practices, 2015 (Matching on specialty type only)ĮTable 7. Joint F-test of Pre-acquisition TrendsĮTable 6. ![]() Changes in practice patterns associated with PE acquisition, by quarterĮTable 5. Unadjusted trends in primary outcomes for PE practices and matched controlsĮFigure 2. Characteristics of PE acquired and non-PE practices, before and after matching, 2015ĮFigure 1. Counts of practices and physicians identified as PE-acquired, by specialty and yearĮTable 4. ![]()
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