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Weinreb, Bill

William Weinreb

Direct Tel: +1 617-712-7114
Tel: +1 617 712 7100 Fax: +1 617 712 7200

Bill Weinreb specializes in government and internal investigations, white collar criminal defense, and complex litigation.  He is an expert in healthcare law and represents providers, pharmaceutical companies, teaching hospitals, specialty pharmacies, and the top executives of publicly-traded corporations in matters ranging from healthcare fraud to securities fraud.  He also represents clients in matters involving trade secret theft, economic espionage, grant fraud, and the Foreign Agent Registration Act.

Mr. Weinreb joined Quinn Emanuel after serving for nearly 20 years in the Boston United States Attorney’s Office.  He spent 10 years as the Deputy Chief of National Security and also served as the Acting United States Attorney.  He has first-chaired over 20 jury trials involving healthcare fraud, off-label marketing, public corruption, and national security violations, and oversaw RMBS, securities fraud, and other criminal and civil enforcement actions that yielded nearly $6 billion in recoveries.

Mr. Weinreb is best known as the lead prosecutor in the investigation and trial of Boston Marathon bomber Dzhokhar Tsarnaev. The five-month trial, which resulted in convictions on all counts, was covered by over 1,000 credentialed reporters and made headlines around the world.

As a member of Quinn Emanuel’s Investigations, Government Enforcement and White Collar Criminal Defense Practice, Mr. Weinreb is active behind the scenes, convincing government agencies to abandon investigations before they’re made public or charges are filed.  In the event litigation cannot be avoided, he brings to the table 20 years’ experience first-chairing jury trials, including ones involving highly complex legal and factual issues and huge media interest.

Mr. Weinreb received numerous professional awards during his career as a prosecutor, including DOJ’s highest award, the Attorney General’s Award for Exceptional Service (2016), and its second-highest award, the Attorney General’s Award for Distinguished Service (2012).  He has been interviewed numerous times by television, radio, and print journalists about issues ranging from health care fraud to the opioid epidemic.  And he is a frequent speaker at conferences on health-care and life-science compliance matters, national security, and crisis response.

Mr. Weinreb was a law clerk for then-Chief Judge Stephen Breyer of the First Circuit Court of Appeals. He received his J.D. from Harvard Law School, cum laude, where he was an editor and treasurer of the Harvard Law Review. He graduated with high honors from Wesleyan University with a B.A. in English.

  • Represent major pharmaceutical company in FCA investigation based on alleged violations of Anti-Kickback Statute.
  • Obtained full declination in FCA investigation of specialty pharmacy.
  • Successfully represented Massachusetts-based healthcare provider in lawsuit filed by health insurer alleging fraud and unjust enrichment.
  • Represent former executive of medical device company in criminal and SEC case charging securities fraud. 
  • Represent former executives of publicly-traded healthcare company in securities class-action and shareholder-derivative suits.
  • Represent major teaching hospital in matters arising from the DOJ’s China Initiative.
  • Represent one of the largest cannabis businesses in the U.S. with cultivation, processing and dispensing operations across the country.
  • Investigation and trial of Boston Marathon bombing case.
  • Trial of two corporate executives of a medical device company accused of off-label marketing and fraud.
  • Trial of medical-clinic owner accused of fraudulent billing practices.
  • Prosecution of employee of a leading internet-services provider charged with theft of trade secrets.
  • Prosecution of two prominent Rhode Island attorneys charged with obstruction of justice and making false statements.
  • Investigation of executives and employees of private and public companies charged with AECA and IEEPA violations for illegally exporting controlled technology
  • Harvard Law School
  • (J.D., 1989)
    • Harvard Law Review:
      • Treasurer
  • Wesleyan University
  • (B.A., English, high honors, 1984)
  • The State Bar of Massachusetts
  • United States District Court:
    • District of Massachusetts
  • United States Court of Appeals:
    • First Circuit
  •  United States Attorney’s Office:
    • District of Massachusetts, 2000-2018
  • United States Attorney’s Office:
    • District of Columbia, 1995-1999
  • Assistant Attorney General:
    • Chief of the Insurance Fraud Division, 1999-2000
    • Prosecutor in the Appellate and Narcotics Division, 1999-2000
  • Shea & Gardner:
    • Associate, 1990-1994
  • Clerk to Judge Stephen G. Breyer:
    • Court of Appeals for the First Circuit, 1989-1990
  • Recognized by Lawdragon 500 as a Leading Litigator in Government Investigations, White Collar, Complex Litigation, (2022-2024)
  • The Best Lawyers in America, “Criminal Defense: White-Collar” (2020-2022, 2024)
  • Attorney General’s Awards for Exceptional Service (2016) and Distinguished Service (2012)
  • FBI Director’s Award (2016)
  • Justice for Victims of Violence Award (1998)
  • DOJ Special Achievement Award (1997, 1998)
  • Organized Crime and Drug Enforcement Commendation (2001- 2005)
  • DEA Special Recognition Award (2009)
  • CBI’s 15th Pharmaceutical Compliance Conference, Washington, D.C., April 24, 2018
  • Health Care Compliance Assoc.’s Boston Regional Conference (Keynote), Newton, MA, September 8, 2017
  • CBI's Compliance Congress for Specialty Products, Boston, MA, September 14-15, 2017
  • CBI’s Managed Markets Compliance Congress, Philadelphia, PA, December 5-6, 2017
  • Massachusetts Technology Collaborative’s Cybersecurity Forum, Cambridge, MA, September 13, 2017