The Centers for Medicare & Medicaid Services is not taking appropriate action against the use of shell companies and dummy store fronts, according to Republican lawmakers. A group of Senators and House members recently sent a letter to CMS Acting Administrator Marilyn Tavenner saying the agency's screening program was still not effectively preventing individual participants from committing fraud. Of particular concern has been the use of nominee owners--individuals who benefit from a scam but whose names may not appear anywhere on company paperwork. --Read the full article at FierceHealthcare