Patients of a physician who is charged with running a “pill mill” linked to 56 overdose deaths plan to sue the government, claiming it has put patients in mortal danger and created a public health disaster by prosecuting the doctor. The lawsuit, which names Attorney General Michael Mukasey, U.S. Attorney Eric Melgren, the state of Kansas and the Kansas Board of Healing Arts as defendants, was to be filed Tuesday by the New Mexico-based Pain Relief Network on behalf of the patients of Dr. Stephen Schneider.