Barry O'Neil

Nathan Z. Heffernan

Areas of Practice: Litigation, Professional Liability, Business & Corporate, Real Estate 

Office Location: Minneapolis, Minnesota / Hudson, Wisconsin

Direct612.336.9316 / Email: 

Nathan Z. Heffernan / Biography

With four years of judicial clerkship experience, Nathan Heffernan knows how the judicial system works. Prior to joining Lommen Abdo, Nathan clerked at the Minnesota Court of Appeals and in Minnesota’s Sixth Judicial District in Duluth. In law school, Nathan interned for Justice Shirley Abrahamson of the Wisconsin Supreme Court. Nathan received his B.A. from the University of Minnesota and received his J.D., cum laude, from the University of Wisconsin Law School.

In his practice at Lommen Abdo, Nathan concentrates his practice on all areas of litigation, including complex commercial litigation and insurance coverage and defense. Nathan also serves clients through the firm’s professional liability practice.

Nathan also serves clients as a business and corporate lawyer helping clients with every stage of their businesses. From entity formation through exit strategy, Nathan is there to assist with all corporate matters.

Born and raised in Wisconsin, Nathan is an avid Minnesota sports fan and enjoys cheering on the Gophers, Vikings, and Loons. While Nathan was a history major at the University of Minnesota, he studied abroad at Trinity College in Dublin. Nathan lived in Duluth for two years before coming back to the Twin Cities.

When he’s not practicing law, he enjoys spending time at his family’s cabin on the Brule River in northern Wisconsin.

Leadership + Activities

  • Professional Liability Defense Federation
  • Minnesota State Bar Association 
  • State Bar of Wisconsin

Published Articles

  • “Chapter 19: Professional Liability Claims-Made Coverage,” Update to Fifth Edition of the Minnesota Insurance Law Deskbook, Minnesota CLE, April 2023


  • University of Minnesota, B.A., 2014 
  • University of Wisconsin Law School, J.D., cum laude, 2018

Bar Admissions

  • Wisconsin, 2019
  • Minnesota, 2022
  • U.S. District Court, Western District of Wisconsin, 2022
  • U.S. District Court, Eastern District of Wisconsin, 2023
  • U.S. District Court, District of Minnesota, 2023

News + Articles

Get to Know Nathan Heffernan

Get to Know Nathan Heffernan

At Lommen Abdo, we are always looking to bring in the best attorneys to serve the needs of our clients in Minnesota and Wisconsin. We are very happy to introduce the newest member of our team, attorney Nathan Heffernan. Nathan’s practice is focused on business and...