Our Attorneys

David W.S. Lieberman

David Lieberman is an experienced litigator of complex fraud claims, with a focus on those involving the False Claims Act.

A former environmental crime prosecutor with the Massachusetts Attorney General’s office, Mr. Lieberman has represented whistleblowers and governments in major false claims act cases.  These include United States ex rel. Hendrix v. J-M Manufacturing Co. filed against the world’s largest municipal water pipe maker.  In that case, David Lieberman helped obtain a favorable jury verdict after a multi-week trial.

Previously, Mr. Lieberman served as a judicial clerk to the Honorable Bruce M. Selya of the First Circuit Court of Appeals. Before joining Whistleblower Law Collaborative, Mr. Lieberman practiced law at Ropes & Gray and Day & Pitney in Boston.

Earlier, Mr. Lieberman graduated from Columbia University School of Law, where he was a Stone and Kent Scholar and served as Managing Editor of the Columbia Law Review. He is also a graduate of Tufts University. Mr. Lieberman served as a corps member in City Year, the trailblazing public service program that inspired Americorps. In City Year, he worked with underserved students in Boston Public Schools and later helped found City Year, Washington, D.C.

David, an experienced commercial litigator and former Assistant Attorney General, represents whistleblowers prosecuting fraud under the False Claims Act and other qui tam statutes.

In 2015 David Lieberman received the “Up & Coming Excellence in the Law Award” from Massachusetts Lawyers Weekly.  Massachusetts Super Lawyers recognized him as a “Rising Star” in 2015-2018 and “Super Lawyer” since 2019.

An active member of the Boston Bar Association, Mr. Lieberman is a BBA Junior Fellow and previously served in the BBA Public Interest Leadership program. He is active as a member of the City Year Seven Generations Board, and a five-time vice-chair of the City Year Legal Breakfast.

David Lieberman serves as an elected member of his Democratic Ward Committee in Somerville and is a contributing writer for the legal podcast Talking Feds.

David Lieberman Whistleblower qui tam lawyer


  • U.S. Court of Appeals for the First Circuit
  • U.S. Court of Appeals for the Second Circuit
  • U.S. District Court for the District of Massachusetts
  • Commonwealth of Massachusetts
  • City Year Boston Seven Generations Board, 2017-2020
  • City Year Boston Alumni Board, 2012-2019
  • City Year Boston Legal Breakfast Co-Chair, 2013-2020
  • Pro Bono assistance with Asylum Petitions and Appeals, 2012-2013
  • Somerville Ward 6 Democratic Committee, 2016-Present
  • Brief, Amici Curiae, on behalf of the Congressional Native American Caucus Amicus, in support of the Penobscot Nation in Penobscot Nation v. Frey et al, No. 16-1424 (1st Cir 2020)
  • Member, Managing Editor, Columbia Law Review, 2006-2008
  • Judicial Clerk, Honorable Bruce M. Selya, U.S. Court of Appeals for the First Circuit, 2008-2009
  • Assistant Attorney General, Massachusetts Attorney General’s Office, 2009-2010
  • Junior Fellow, Boston Bar Association, 2014-2019
  • Lecturer, Boston University School of Law, 2016-2017
  • Harlan Fiske Stone Scholar, Columbia School of Law, 2005-2006, 2007-2008
  • James Kent Scholar, Columbia School of Law, 2006
  • Public Interest Leadership program, Boston Bar Association, 2014-2015
  • Up & Coming Excellence in the Law Award, Massachusetts Lawyers Weekly, 2015
  • Rising Star, Massachusetts Super Lawyers, 2015-2018
  • Massachusetts Super Lawyer 2019-2023
  • Boston Magazine Top Lawyer 2021-2023
Client's False Claims Act case settles for $12.9 Million
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