About Us

GT Law Firm Offices

GT Law Firm combines years of experience and reputation with excellent client service.  Unlike a large law firm, GT clients are people, not numbers.  GT clients have their calls returned quickly, their cases are handled with attention to detail, and they are not passed from one lawyer to the next.

At the GT Law Firm, our advice is free, even if you are still trying to decide what lawyer to hire. We can discuss your options, what other lawyer or law firm you are considering hiring for your case, fee amounts, and any other concern you have to be sure you are hiring the right lawyer for you. We are confident that we are the right fit for your case.

“Every person or their family member who has been injured or killed by someone’s misconduct deserves answers as to how and why it happened, and fair compensation for all of the harms and losses suffered.”

About Guy Thiessen

Guy has been representing injured clients for over 25 years. He has taken his years of experience and courtroom skills developed while working in both large and small law firms and opened the GT Law Firm.

Guy became a lawyer because he wanted to help the powerless against the powerful. To do this effectively, he chose to work at a law firm that represented insurance companies as his first law-related job in order to learn how large insurance companies handle insurance claims. He took that knowledge and began representing injured victims and their families in 1990, first working for a small firm, then opening his own office in 1992.

Unlike some law firms, my practice allows me to really focus on my client as a person, not a number

In 1997, he merged his law practice with a larger personal injury law firm and continued to develop vast experience in all types of practice areas listed on the Services page, while managing and mentoring other lawyers on how to handle cases.

  • Licensed to practice law in the State of Oklahoma and specially admitted to all Oklahoma Federal Courts and the 10th Circuit Court of Appeals.
  • Licensed to practice law in the State of Arkansas and all Arkansas Federal Courts as well as the 8th Circuit Court of Appeals.
  • Specially admitted to appear in the United States Supreme Court.
  • Past President and long-time member of the Oklahoma Association for Justice (OAJ), a statewide trial lawyer association of over 400 members. Former OAJ State Delegate to the American Association of Justice (AAJ), a national trial lawyers association.
  • Member of AAJ and the AAJ Nursing Home Litigation Group, dedicated to the representation of nursing home residents who have been neglected or abused.
  • Appointed to and served on the Oklahoma Legislative Task Force on Nursing Home Insurance in 2006, which recommended to the Governor that all Oklahoma nursing homes be required to have liability insurance.
  • Guy has been a speaker at many seminars teaching other lawyers how to handle cases against nursing homes and assisted living facilities.

About Rebecca Jones, DNP, RN

Rebecca is a Registered Nurse with over 20 years experience in the healthcare industry including clinical practice, education, quality improvement, patient safety, and administration. Her back ground includes development and implementation of quality measures used to evaluate the care provided to patients and families as well as working with facilities to meet regulatory compliance. She is a Certified Professional in Patient Safety and a Certified Professional in Healthcare Quality.


Chrissy C.

Guy worked tirelessly for my mom. My mom was a victim of severe nursing home abuse and neglect that in the end cost her, her life. When I first met with Guy and explained what had gone on and expressed the guilt I carried he was so kind and reassuring and explained that this is not acceptable and should be addressed. He fought for what was right and in the end helped to vindicate my moms death. I would hire Guy again in an instant, you will not find another attorney with the integrity and fight that Guy has.

Diane J.

I was searching for an attorney because my mother was injured in a nursing home due to negligence. A family friend referred me to Guy. When I met Guy, I felt very comfortable and knew he was trustworthy. He was professional and personable from our first consultation until the case was settled. Guy made a difficult time less stressful. I would definitely recommend him to anyone needing legal services.

Anna Thom

Guy and his team are simply amazing. He made himself available at all times to answer questions or hear concerns. I feel that he genuinely cared about me and not just the outcome of my case. I highly recommend GT Law Firm.

Patricia L.

I will forever be grateful to Guy. He’s a very compassionate person. He’s the only one who cared enough to listen to me. Who took the time to investigate and help me find the peace I needed. He fights for the underdog. The world needs more people like him.

Cindy S.

Everyone at this law firm was incredible. Guy was very professional and dependable. It is such a relief to know that I have a lawyer I can trust.

Caley S.

I definitely recommend using GT Law Firm. Guy and his team were highly professional, kind and empathetic. They took care of all of the overwhelming details regarding my car wreck which allowed me to focus on healing. I am very thankful for everything they did for me and my family!

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