J. William VanDehei


  • Office Contact Info
  • Biography

    William VanDehei is an Associate in the Phoenix office of GRSM. He obtained his law degree from Louisiana State University where he focused on trial and appellate advocacy. In recognition of his achievements, William was inducted into the Order of the Barristers National Honor Society. After law school, he clerked for the Honorable David B. Gass on the Arizona Court of Appeals. In that role, William assisted with drafting six published opinions and more than thirty memorandum decisions addressing civil, criminal, family, and juvenile law.

    Following his clerkship, he worked as a litigation associate for both regional and national firms where he successfully defended a variety of clients from individuals, subcontractors, and family-owned businesses to large national corporations. In so doing, He has handled all aspects of litigation, from claim inception through resolution on appeal in cases involving auto accidents, premises liability, product liability, wrongful death, professional malpractice, and nurse malpractice.

    Outside the office, William is an avid fan of Juventus FC. He also enjoys reading, running, hiking, and traveling with his wife and daughter.


    • Arizona
    • U.S. District Court, District of Arizona
    • U.S. Court of Appeals for the Ninth Circuit
  • Practice Areas
  • Education


    J.D., cum laude, Paul M. Hebert Law Center at Louisiana State University

    • Order of the Barristers 
    • CALI Award, The Legal Profession 
    • Dean’s Scholar Award, 2017–18
    • First Place: 2017 Robert Lee Tullis Moot Court Competition
    • First Place: 2019 Dean’s Cup Moot Court Competition
    • Top 10 Oralist: 2019 Jessup International Law Moot Court Competition, U.S. South Regional
    • Best Brief: 69th Annual National Moot Court, Region VII

    B.S., Psychology, University of Utah

    • Psi Chi International Psychology Honor Society
    • MUSS Board