A California plastic surgeon accused of molesting dozens of patients, many while unconscious, has pleaded not guilty to 64 felony sex charges.

Forty-seven-year-old Peter Chi (CHEE) of Tracy entered the plea Monday in San Joaquin County Superior Court.

Authorities say Chi inappropriately touched more than 30 female patients, including a 15-year-old girl, while working at his business, Beauty Renewed.

A grand jury indicted Chi in June on charges that included sexual battery by fraud and sexual penetration by foreign object while unconscious.

The former doctor also faces civil lawsuits from some 40 women. Chi's insurance company also is suing him in federal court, accusing him of failing to disclose his criminal troubles when he renewed his policy.