The 43-year-old singer, whose real name is George Panayiotou, was arrested in October. He faces charges of driving under the influence of drugs.
His trial starts May 8, followed by hearings on May 30, May 31 and June 8.
Michael will play the first concert at Wembley Stadium on June 9.
District Judge Katherine Marshall rejected an application for Michael to be allowed to be absent throughout the trial.
Marshall said she wanted Michael to be in court May 8 and would be willing, if he didn't wish to remain at the trial, to bail him to reappear on the final day.
Photos: George Michael
"He is around in the area because I believe he is appearing at Wembley Stadium. I do not think he will have any difficulty in being here on June 8," Marshall said.
Michael rose to fame in the 1980s as half of the duo Wham! before starting his solo career.