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Eoin P. Beirne


[email protected]



Eóin is an accomplished white collar defense lawyer who resourcefully shepherds individual and corporate clients through government investigations and enforcement proceedings. He represents clients in a wide variety of industries in state and federal courts and before an array of investigative and enforcement bodies. Eóin routinely represents Boards of Directors or Board committees conducting internal investigations. He counsels clients on a variety of matters including wire and mail fraud, health care fraud, public corruption, insider trading, and violations of the False Claims Act and the Foreign Corrupt Practices Act.

Eóin has successfully tried cases in federal and state courts and represents clients dealing with the DOJ, SEC, State Attorneys General, OIGs, FINRA and other regulatory and enforcement bodies.

Eóin has conducted numerous internal investigations both at the client’s own initiative and following receipt of a subpoena, Civil Investigative Demand or other notice of a government investigation. Eóin also advises clients responding to cyber-attacks and the Computer Fraud and Abuse Act.

Prior to joining the firm, Eóin served as a student assistant district attorney in law school, was a member of the Moot Court Executive Board, was elected to the Order of Barristers and interned for Judge Reena Raggi in the Eastern District of New York.


  • Brooklyn Law School (JD, cum laude)
  • Trinity College (BA, Economics)


Representative Matters

  • Currently representing various health care providers in connection with criminal and civil investigations. 
  • Currently representing an individual in connection with ongoing global investigations into 1MDB. 
  • Represented several elected officials with respect to grand jury investigations without any charges being brought. 
  • Convinced the Department of Justice not to charge or sue a number of government contractors in differing industries following investigations of alleged False Claims Act violations.
  • Resolved False Claims Act investigation by the Department of Justice and Massachusetts Attorney General into urgent care clinic chain. 
  • Represented several diagnostic laboratories in connection with criminal and civil investigations by the Department of Justice.
  • Represented pharmaceutical company in connection with SEC and DOJ insider trading investigation.
  • Secured complete dismissal of charges at trial in federal court involving mail and wire fraud against an individual.
  • Represented large corporation in connection with Foreign Corrupt Practice Act investigation resulting in no charges brought.
  • Represented top gaming company and company executives in connection with grand jury investigation.
  • Performed internal investigation for board committee in response to whistleblower complaint.
  • Routinely represent individual witnesses in connection with FBI and OIG investigations.
  • Represented technology company in connection with theft by former employee.

Recognition & Awards

  • Massachusetts Super Lawyers: Criminal Defense: White Collar (2017-2019)
  • Massachusetts Super Lawyers: Rising Star – Criminal Defense: White Collar (2013 - 2016)


  • Member, Boston Bar Association
  • Member, Federal Bar Association
  • Past Board Member, Massachusetts Association of Criminal Defense Lawyers (MACDL)
  • Member, American Bar Association’s Public Corruption and Extortion Subcommittee and the Criminal E-Discovery Taskforce

Recent Insights

News & Press



Viewpoint General
Criminal healthcare enforcement in 2018 once again focused heavily on opioids, targeting manufacturers, prescribers, dispensers and those who contribute to the addiction epidemic, and on prosecution of individuals for a variety of offenses.  In addition, the DOJ announced some expected policy changes related to the way it investigates and prosecutes corporations as well as the restrictions placed on corporations after resolution of government charges.  We will address each of these issues in this post and will attempt to forecast what we expect to occur in the coming year.

Narrow Ruling for Privacy at SCOTUS in Carpenter

July 3, 2018 | Blog | By Eoin Beirne

The Supreme Court ruled, at the end of June, that seizing cell-site location information—data that tracks cell phone users’ movements—constitutes a search under the Fourth Amendment.

Health Care Enforcement Review and 2018 Outlook: Criminal and Civil Enforcement Trends

January 8, 2018 | Blog | By Eoin Beirne, Samantha Kingsbury, Karen Lovitch

In both civil and criminal enforcement proceedings, 2017 was perhaps most notable for the cases brought against individual health care providers and small physician practice owners. 
Continuing its annual tradition, the U.S. Department of Justice (“DOJ”) and the U.S. Department of Health and Human Services (“HHS”) announced last week the largest ever health care fraud enforcement action by the Medicare Fraud Strike Force.  As part of the national health care fraud takedown, the government charged 412 defendants with approximately $1.3 billion in alleged fraud.
Happy New Year! As we kick off 2017, our Health Care Enforcement Defense team brings you its annual review of key government policies, regulations, and enforcement actions in 2016, and the impact these trends are expected to have on enforcement in the year ahead.
Like many before it, this year has been one to watch in government health care fraud enforcement efforts. In September 2015, the Department of Justice (DOJ) released the “Yates Memo,” which reaffirmed the government’s commitment to investigating and prosecuting culpable individuals in cases involving suspected corporate fraud.

DOJ Issues Memo Directing Prosecutors to Focus on Individual Accountability

September 11, 2015 | Blog | By Eoin Beirne, Bridget Rohde

The U.S. Department of Justice (DOJ) issued a memorandum on Wednesday from Deputy Attorney General Sally Quillian Yates that reaffirms the Government’s commitment to prosecuting individuals and formally instructs prosecutors to focus on individual accountability when dealing with corporate misconduct.

News & Press

Karen Lovitch, practice leader of the Mintz Health Law Practice, Eoin Beirne, a Member in the firm’s Litigation practice, along with Associates Samantha Kingsbury and Mackenzie Queenin authored the last in a four-part series of articles on health care enforcement trends in 2017.
Fifty-one attorneys from Mintz have been named Massachusetts Super Lawyers for 2017 and thirty have been named Massachusetts Rising Stars.
Mintz Members will be participating in multiple panel discussions at the 2017 Boston Conference on Cyber Security hosted by Boston College and the FBI. The event presents an opportunity for leading minds to come together and fashion a more secure cyberspace.
Fifty-three Mintz attorneys have been named Massachusetts Super Lawyers for 2016 and thirty-one have been named Massachusetts Rising Stars. The findings will be published in the November 2016 issue of Boston Magazine and in a stand-alone magazine, New England Super Lawyers. 



Emerging Issues in Discovery Practice

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Boston, MA