Nathaniel R. Mendell

Partner | Boston

nmendell@mofo.com | (617) 648-4795 nmendell@mofo.com
(617) 648-4795

Nathaniel (Nate) Mendell is a partner in Morrison & Foerster’s Investigations + White Collar Defense practice group who was the former Acting U.S. Attorney for the United States Attorney’s Office for the District of Massachusetts. He represents companies, financial institutions, boards, and executives through all phases of investigation and litigation involving allegations of corporate healthcare fraud, securities and other financial fraud, public corruption, criminal intellectual property theft, and international money laundering. After almost two decades of service in the U.S. Department of Justice (DOJ), Nate offers deep experience and insider perspectives in white collar defense, internal investigations, and government enforcement actions.

Prior to joining Morrison & Foerster, and while at the U.S. Attorney’s Office for the District of Massachusetts, Nate served as Senior Litigation Counsel advising the U.S. Attorney. He also previously served as Acting U.S. Attorney and First Assistant U.S. Attorney for that office. As Acting U.S. Attorney, Nate led over 135 prosecutors and reported directly to the Attorney General. Before serving as First Assistant, Nate was Chief of the Narcotics and Money Laundering Unit, where he led more than a dozen prosecutors investigating and prosecuting money laundering cases across the United States, Colombia, Europe, and the Middle East. He also contributed to the creation of the District Court’s RISE Program and was an Assistant U.S. Attorney in the Southern District of Florida.

Nate earned his B.A., cum laude, from Amherst College and earned his J.D. from Harvard Law School where he served as the Editor in Chief of the Harvard Latino Law Review.

Representative Experience

  • Violations of the Anti-Kickback Statute against a variety of major pharmaceutical companies, which culminated in settlements involving nearly $1,000,000,000 in fines and restitution to resolve the improper use of “patient assistance programs” to subsidize patient co-pays.
  • Violations of the Controlled Substances Act against the founder and chief executive officer of a publicly‑traded pharmaceutical company related to the opioids epidemic.
  • False Claims Act matters involving improper inducements, insurance pull-through schemes, and improper billing and coding practices.
  • Fraud and tax fraud charges against a professor suspected of stealing trade secrets and intellectual property from U.S. interests for a foreign government.
  • Conspiracy to obtain unauthorized access to computers and to commit wire fraud and securities fraud charges against a Russian businessman.
  • Charges of mail fraud, money laundering, bribery, conspiracy to commit mail and wire fraud, and racketeering conspiracy against coaches, administrators, and parents who fraudulently obtained test scores and college admissions for students related to the Varsity Blues scandal.
  • Six-week mail and wire fraud trial against an American businessman involved in a multi-million dollar Ponzi scheme.
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