Jeffrey W. Brennan (Jeff) has practiced exclusively antitrust law for three decades, including more than 20 years in private practice and nearly 10 years over two tours at the Federal Trade Commission, from 1985 to 1990 as a staff attorney handling mergers and from 2001 to 2006 as assistant director, then associate director, of the Bureau of Competition. His current practice includes merger clearance, antitrust litigation, investigations by the FTC, DOJ and state attorneys general, and counseling on competitor collaborations and many other antitrust compliance issues. Jeff’s clients cover many industries, with the highest number in the healthcare services and products sector. He is co-chair of the Firm’s Health Antitrust affinity group.

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  • Antitrust counsel to Mountain States Health Alliance in obtaining, over FTC staff opposition, approvals with antitrust immunity from Tennessee and Virginia for merger with Wellmont Health System
  • Antitrust counsel to Cabell-Huntington Hospital in obtaining, over FTC staff opposition, approval with antitrust immunity from West Virginia for merger with St. Mary’s Medical Center
  • FTC clearance of merger of Rochester General Health System and Unity Health System, two of the three hospital systems in Rochester, New York

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  • Washington, DC Super Lawyer, Antitrust 2020
  • The Best Lawyers in America 2009 to 2021, Antitrust Law, Litigation – Antitrust
  • Chambers USA 2008 to 2020
  • The Legal 500 United States 2012 to 2019

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  • American Bar Association, Section of Antitrust Law
    • Council Member, elected to three-year term through 2019
    • Antitrust Section Liaison to Section of Health Law

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Georgetown University Law Center, JD, 1985
College of the Holy Cross, AB, 1981

District of Columbia
New York

Jeffrey W. Brennan

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