Evidence gathered by the nearly two-year-old Medicare Fraud Strike Force finds four Louisiana physicians wrote hundreds of bogus prescriptions that powered multimillion-dollar health-care frauds in the Baton Rouge area.

All four physicians remain licensed to practice medicine, including two who pleaded guilty and a third convicted at a jury trial in August. The fourth doctor, who had previous probations of his license, is fighting the charges in his indictment.

The Louisiana State Board of Medical Examiners declined to comment.  Doctors can continue practicing medicine while their licenses are on probation, but cannot during a suspension.