NASHVILLE, Tenn. (AP) — A Tennessee nursing home has signed a $30 million settlement to resolve a Medicare fraud lawsuit filed by two whistleblowers. One whistleblower, Kristi Emerson, tells The Tennessean she worked at Signature Healthcare of Columbia for more than a decade. She says by 2015, pressure from corporate managers was intolerable and included demands that hours of therapy be performed daily even if it was not necessary for a patient.