A judge is requiring higher bail for a Tracy plastic surgeon accused of molesting female patients, now that 64 women have alleged they were sexually assaulted. San Joaquin County Superior Court Judge Roger Ross said he raised bail for 46-year-old Peter Chi to $500,000 to "ensure that he'll appear in court." Chi had been free on $100,000 bail since he was arrested and charged with sexually assaulting eight women in February. On Monday, prosecutors filed a revised criminal complaint accusing him of molesting 64 women, some as recently as January. The doctor operated Beauty Renewed in Tracy and also worked from a Stockton office. Chi has been ordered to stop practicing and has surrendered his medical license.