Jeffrey Keller, 53, of Peabody, today admitted to molesting four patients at his Revere office, the Suffolk County DA's office reports. However, if he is a good boy for the next three years, he won't have to spend any time in jail - if he does violate probation, he could thrown in jail for up to eight years.

Keller pleaded guilty to four counts of indecent assault and battery on patients. He was initially charged with molesting two women; two more came forward after his case was publicized, the DA's office says.

In addition to probation, Keller must register as a sex offender, wear a GPS monitoring bracelet, undergo sex offender treatment, stay away from the victims and not be employed in a role where he would have physical contact with women. He has already given up his chiropractic license.