About Us

Looking through a French door to a lawyer working at his desk.

Niehoff Peterson & Cortez, LLC is a boutique law firm with over 30 years of hard-earned experience.

We have built a solid reputation in St. Louis and surrounding areas of successfully advocating for our clients in all types of criminal and related cases. We take a wolf-pack approach in tackling whatever challenges our clients’ face. Our goal is to obtain the best possible resolution to our clients’ problems, as quickly as possible, while keeping them fully informed of our progress.

If your matter involves law enforcement authorities or the criminal justice system, we can handle it. Our practice includes dealing with:

  • Federal crimes and investigations

  • Missouri and Illinois state felony, probation, juvenile, and misdemeanor prosecutions

  • State and federal appeals

  • Municipal offenses, including DUI/DWI and traffic

  • Criminal record expungements