プライマリケア買収が診療利用を拡大する可能性(Private equity acquisition can expand primary care use by expanding workforce, study finds)

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2026-05-20 ブラウン大学

米国のBrown Universityの研究チームは、プライベートエクイティ(PE)によるプライマリケア医療機関買収が、医療提供体制に与える影響を分析した。研究では、PEファンド傘下に入った診療所では、診療件数増加や収益性重視の運営が進む一方、患者ケアの質や医療アクセスへの影響が懸念されることを示した。特に、短期的利益を重視する経営方針が、医師の業務負担増加や診療時間短縮につながる可能性が指摘された。また、地域医療の統合・集約化により、競争環境や医療費構造が変化する可能性も示された。研究チームは、PEによる医療機関運営拡大に対し、医療の質、安全性、公共性を評価する継続的監視が必要だとしている。成果は、医療経済政策やヘルスケア産業規制に重要な示唆を与える。

プライマリケア買収が診療利用を拡大する可能性(Private equity acquisition can expand primary care use by expanding workforce, study finds)

<関連情報>

プライマリケアにおけるプライベートエクイティによる買収:利用状況、支出、および人材の変化 Private Equity Acquisitions In Primary Care: Changes In Utilization, Spending, And Workforce

Yashaswini Singh yashaswini_singh@brown.edu, Meehir N. Dixit, Amal N. Trivedi, and Christopher M. Whaley
Health Affairs  Published:May 20, 2026
DOI:https://doi.org/10.1377/hlthaff.2025.01703

Abstract

Primary care is essential to advancing population health, yet it has faced underinvestment and workforce shortages in the US. Private equity (PE) investments could expand access by facilitating participation in value-based contracts and enhancing information technology capacity. However, PE’s emphasis on short-term profitability may impose productivity pressures on physicians, with uncertain implications for patient care. Using a stacked difference-in-differences design and national Medicare claims data, we examined 225 PE acquisitions of primary care practices during the period 2016–22. PE acquisition increased the number of services billed and patients seen by primary care physicians by 30 percent and 11 percent, respectively. Patients in PE-acquired practices received 12.9 percent more additional services, driven by laboratory testing and the Medicare annual wellness visit. PE acquisitions also increased the total number of primary care physicians and advanced practice providers, with the latter growing at a faster rate. Taken together, our results suggest that PE investments have the potential to increase the use of primary care services, in part through greater reliance on advanced practice providers.

医療・健康
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