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John Gatzke

  • Attorney


Practice Areas

  • Personal Injury
  • Worker’s Compensation Law
  • Litigation
  • Social Security claims
  • Probate


Attorney John Gatzke specializes in Personal Injury and Worker’s Compensation Law and Litigation. Gatzke has been chosen for the Wisconsin Super Lawyers Rising Stars list on seven occasions, including the last six consecutive years (2018-2023). Only 2.5% of attorneys in Wisconsin receive this distinction.

Gatzke has litigated personal injury and work comp cases in nearly every county in the State of Wisconsin and has handled federal tort claim matters in the Eastern District of Wisconsin. He has won numerous cases against large insurance companies in matters ranging from motor vehicle accidents and worker injuries to complex business litigation.

Attorney Gatzke, whose immediate family includes physicians and physician’s assistants, has an intimate understanding of medical issues and terminology, which serves him well in dealing with accident and work-related injuries and treatment. In jury trials, John has shown a unique ability to reduce technical medical data to a level which is understandable to a juror, and his history of significant awards in jury trials and hearings is a testament to his courtroom presence.

Attorney Gatzke rounds out his practice representing individuals in social security claims and in probate work.

John currently lives in Brookfield with his wife and their three children. He has undergraduate degrees from the University of Wisconsin-Stevens Point and received his law degree from Marquette University (cum laude), where he finished near the top of his graduating class. John received the Dean’s Honor Rating during his undergraduate years at UW and was an Honor student at Marquette Law. He received the CALI Excellence Award as the top ranked student in Negotiable Instruments and also in Law and PC. He has been a member of the Waukesha County Bar Association, the State Bar of Wisconsin, the Wisconsin Academy of Trial Lawyers and the American Trial Lawyers Association. He continues to be active in several Brookfield and New Berlin organizations and regularly volunteers his time on behalf of children and youth sports.


  • Marquette University Law School, Milwaukee, Wisconsin
    • Honors: cum laude
    • Honors: CALI Excellence Award as the top ranked student in Negotiable Instruments and also in Law and PC
  • University of Wisconsin-Stevens Point
    • Honors: Dean’s Honor Rating
    • Major: Communications

Professional Associations

  • Waukesha County Bar Association, Member
  • State Bar of Wisconsin, Member
  • Wisconsin Academy of Trial Lawyers, Member
  • American Trial Lawyers Association, Member


  • Wisconsin Super Lawyers Rising Stars list