Nathan is a member of the firm's Litigation, Construction Law and Government Affairs Groups in the Concord, New Hampshire office. He focuses his litigation practice on representing public and private companies in the construction, health care and financial services industries in a variety of complex commercial matters in state and federal courts. Nathan also leads the firm's Government Affairs practice in New Hampshire representing clients before the Legislature and numerous state agencies.

In addition to his commercial litigation and government relations work, Nathan counsels health care institutions and government contractors in fraud investigations and represents them in whistleblower and government enforcement actions. He has authored a number of articles discussing developments in the federal fraud laws that apply to heath care institutions and government contractors.

Nathan also counsels clients with respect to data security and breach notification laws and obligations. He has provided presentations to members of the financial services and insurance industries discussing recent developments in data security and breach notification laws as well as potential insurance coverage for data breach events.

Prior to joining Preti Flaherty in 2013, Nathan practiced law in Washington, D.C., for five and a half years with the international law firm Reed Smith LLP. During law school, Nathan interned for the United States Department of Justice—Asset Forfeiture and Money Laundering Section and The Honorable Mary Ellen Coster Williams at the United States Court of Federal Claims. Nathan was also a member of the Law Review and National Moot Court team.

Nathan currently resides in Concord, NH with his wife and three young sons. He is a native of Dover, NH.

Practice Areas


  • Catholic University of America, Columbus School of Law (J.D., magna cum laude, 2007)
  • Georgetown University (B.A., magna cum laude, 2004)


  • New Hampshire
  • District of Columbia
  • Virginia
  • U.S. Bankruptcy Court, District of New Hampshire
  • U.S. District Court, District of New Hampshire
  • U.S. District Court, District of Columbia
  • U.S. District Court, Eastern District of Wisconsin
  • U.S. Supreme Court

Professional Affiliations

  • New Hampshire Bar Association - Insurance Section, Clerk
  • New Hampshire Bar Association - New Lawyers Section, Member


  • "Health Reform Legislation Includes Significant Amendments to the False Claims Act," co-author, Federal Forecaster, Vol. VI, No. 2 (Spring 2010)
  • "The President Signs a Significant Amendment to the Federal False Claims Act," co-author, Financial Fraud Law Report (September 2009)
  • "Sweeping Changes to the Federal False Claims Act Are on the Horizon," co-author, Financial Fraud Law Report (May 2009)
  • "Changes to the Federal False Claims Act Are on the Horizon," co-author, Federal Forecaster, Vol. V, No. 2 (Spring 2009)
  • Comment, "Bringing Bloggers Into the Journalistic Privilege Fold," 55 Catholic Law Review 1059 (Summer 2006)