Tyndall is charged with sexual misconduct toward 16 former patients over a seven-year period when he worked at the university's on-campus health center. He was arrested in late June.
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He was released on $160,000 bond, according to a report from the Los Angeles Times.
Ex-USC gynecologist pleads not guilty to sexual assault
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The 72-year-old is scheduled for a preliminary hearing on Oct. 4.
Tyndall has continued to deny any wrongdoing and has pleaded not guilty.