A former employee of a private ambulance transportation service has pleaded guilty in U.S. District Court to conspiracy to commit health care fraud. Kahley Vergon-Moyette, 28, of Monticello, is one of three Hoosier EMS employees accused of defrauding Medicare of more than $2 million. She was the general manager and operations manager of the Buffalo-based business. Court documents filed last November indicate the company submitted claims to Medicare between May of 2009 and May of 2012 for reimbursement of services that were never rendered. Hoosier EMS owner Roy Dunn and employee and former co-owner Anthony Bitterling, both of Winamac, are also charged with conspiracy to commit health care fraud. Their cases are pending in U.S. District Court. Vergon-Moyette is scheduled to be sentenced on Jan. 8, 2014.