( CNN ) -- A Delaware pediatrician was indicted Wednesday on 58 additional counts of rape and other sexual offenses in the alleged child abuse of his patients , state Attorney General Beau Biden announced Monday . Dr. Earl Bradley , 56 , previously pleaded not guilty to 471 felony counts involving 102 girls and one boy . Wednesday 's indictment -- which includes charges of rape , unlawful sexual contact , continuous sexual abuse of a child and sexual exploitation -- involves 24 girls he saw as patients from 1999 to 2009 . Biden has said the charges are based on `` video and digital evidence '' seized from Bradley 's home and medical practice in December , when the doctor was arrested . Bradley , whose practice was in Lewes , Delaware , also has medical licenses in Pennsylvania , New Jersey and Florida . Authorities have said they have contacted officials in those states . In a February 24 interview with CNN , Bradley 's attorney said he would base his client 's defense on mental health . `` Most of the evidence in this case comes from videotapes -- it 's kind of hard to argue with videotapes , '' Eugene Maurer Jr. said . He added , `` The issue in this case is going to come down to his mental health at the time . ''
Dr. John Bradley previously pleaded not guilty to two other counts . Latest charges involve two girls he saw as patients from 1999 to 2001 . Officials say charges are based on ` ` video and digital evidence ''