In 1990, McGraw joined lawyer Gary Dobbs in co-founding Courtroom Sciences Inc. (CSI), a trial consulting firm through which McGraw later came into contact with Oprah Winfrey. After some time, CSI became a profitable enterprise. It advising Fortune 500 companies and injured plaintiffs about achieving settlements. McGraw is no longer an officer or director of the company. After starting CSI, McGraw ceased the practice of psychology.