Medical bill U.S. representatives Greg Walden (R-OR) and Frank Pallone, Jr. (D-NJ) announced this week they are officially investigating a group of private equity firms that own physician staffing services. (Photo: Shutterstock)

The bipartisan, bi-coastal duo that has taken on surprise medical bills has turned its attention to the role played by private equity firms in rising provider costs.

U.S. representatives Greg Walden (R-OR) and Frank Pallone, Jr. (D-NJ) announced this week they are officially investigating a group of private equity firms that own physician staffing services. The firms–KKR & Co. Inc., Blackstone Group, and Welsh, Carson, Anderson, & Stowe–were sent requests to hand over "information and documents pertaining to the firms' ownership of private physician staffing and emergency transportation companies, which recent research shows are a leading source of surprise medical billing," Walden said in a release.

Recommended For You

Complete your profile to continue reading and get FREE access to BenefitsPRO, part of your ALM digital membership.

Your access to unlimited BenefitsPRO content isn’t changing.
Once you are an ALM digital member, you’ll receive:

  • Breaking benefits news and analysis, on-site and via our newsletters and custom alerts
  • Educational webcasts, white papers, and ebooks from industry thought leaders
  • Critical converage of the property casualty insurance and financial advisory markets on our other ALM sites, PropertyCasualty360 and ThinkAdvisor
NOT FOR REPRINT

© 2025 ALM Global, LLC, All Rights Reserved. Request academic re-use from www.copyright.com. All other uses, submit a request to [email protected]. For more information visit Asset & Logo Licensing.

Dan Cook

Dan Cook is a journalist and communications consultant based in Portland, OR. During his journalism career he has been a reporter and editor for a variety of media companies, including American Lawyer Media, BusinessWeek, Newhouse Newspapers, Knight-Ridder, Time Inc., and Reuters. He specializes in health care and insurance related coverage for BenefitsPRO.