About Mr. Barrett
Mr. Barrett Weisz studied political science at the University of California, San Diego, and completed his law degree at the University of Denver. Those years set the course for a career spent largely in courtrooms. The move from an undergraduate major in government and public affairs to a career in criminal law was steady, not sudden, and it shows in how he organizes a case and prepares witnesses.
He began his legal career as a trial lawyer in the Colorado State Public Defender's office in 1996. That early courtroom work formed the backbone of his practice: front-line defense of people accused of crimes. In 2002 he joined Richiano and Ridley, P.C. as an associate. By 2006 he was a partner at Ridley, McGreevy, Winocur & Weisz, P.C. The next phase of his career included roles as owner of Barrett Weisz, LLC and of counsel at Levin Sitcoff, P.C., both beginning in 2011. In 2023 he became a partner at Nielsen Weisz LLC.
Across those moves, Weisz maintained a steady emphasis on litigation. He practices in Colorado courts and has litigated matters that have reached the U.S. Court of Appeals for the Tenth Circuit. He handles trials, post-conviction proceedings, and appellate work. The mix of state and federal appearances gives him a broad view of how cases unfold from indictment through appeal.
Recognition for that work includes listings by national peer-review organizations. He has been named a Super Lawyer in criminal defense and is listed in Best Lawyers in America for criminal defense. These are acknowledgments from professional organizations rather than promotional claims, and they sit alongside his courtroom record.
His background as a public defender still shapes his courtroom manner. He tends to frame cases around the evidence that matters to jurors and judges. He prepares witnesses carefully and places weight on trial tactics that can move a case, whether that means an early resolution or a full contested trial.
Mr. Barrett Weisz is currently a partner at Nielsen Weisz LLC, where he concentrates on criminal defense at trial and on appeal.
