Ashley M. Fischer - McDermott Will & Emery


Ashley Fischer advises clients across all sectors of the healthcare industry on their most critical transactions and collaborations. Her health antitrust practice, which includes investigations and conduct matters, makes her a valuable partner to health care businesses as they work to expand their networks and pursue their strategic business initiatives.

Ashley has successfully defended numerous health system mergers, including competitor collaborations, through federal and state antitrust enforcement agency review and advised them in preparation for such review. Her counsel on antitrust implications in the formation and operation of joint ventures and competitor collaborations is highly sought-after. She works across a variety of care settings, including managed care contracting networks such as clinically-integrated networks (CINs), accountable care organizations (ACOs) and independent practice associations (IPAs). Ashley has also successfully defended health systems in antitrust claims by physicians against hospitals, including those pertaining to medical staff privileging disputes and exclusive contracts.

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  • Successfully defended hospital merger investigations of in-market competitors
  • Counseled nearly 50 provider contracting networks (CINs, ACOs, IPAs, PHOs) on their formation and operation, including the antitrust implications concerning the sufficiency of clinical integration programs and substantial financial risk sharing, joint contracting and size of network, messenger-model compliance, value-based payor contracts, shared savings models and hospital-efficiency contracts, and Medicare Shared Savings Program (MSSP) requirements
  • Successfully defended against antitrust enforcement agency investigations of provider contracting networks

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  • Chambers USA, 2017 to 2022
  • The Best Lawyers in America, 2015 to 2023
  • Illinois Super Lawyers, 2016 to 2022

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  • American Health Lawyers Association, Antitrust Practice Group, vice chair, 2017 to 2022
  • American Bar Association, Antitrust Section, Health Care Committee Recent Developments, former editor


Northwestern University School of Law, JD, 2000
Georgetown University, BA, cum laude, 1996