Tim Granitz

Tim Granitz

As a founding partner of Katers & Granitz, LLC, Tim brings his track record of obtaining whistleblower awards for several clients across the United States. Tim’s expertise in qui tam litiation helps recover significant tax dollars for U.S. citizens in addition to winning rewards for his clients reporting fraud. 

Tim and his clients have brought forth misconduct and fraud against the government in the following areas (but not limited to):

  • False Claims Act litigation
  • SEC Whistleblower investigations
  • IRS tax fraud investigations
  • Customs Fraud
  • Medicare Fraud
  • Government Contract Misconduct
  • Small Business Set Asides
  • SBA (Small Business Adminstration)
  • SEC (Securities and Exchange Commission)


  • J.D., Marquette University Law School 
  • B.A., Political Science Saint Louis University 


  • State of Wisoncsion
  • Eastern District of Wisconsin
  • Western District of Wisconisin
  • Eastern Michigan District

Recognition & Awards

  • 2022 National Law Journal - Trailblazers: Elite Boutiques
  • 2022 Global Law Experts - Healthcare Whistleblower Lawyer of the Year in Wisconsin

Professional Organizations

  • Taxpayers Against Fraud, Serving on the Regulatory Committee