Ven-A-Care exposes drug companies that overcharge Medicare
                                
                                
                                    (Newser) -
                                    Ven-A-Care started out as a small pharmacy supplying intravenous drugs for AIDS and cancer patients, but these days it doesn’t make its money off drugs—at least, not the ones it sells. Instead, it’s pulled in $380 million since 2000 by acting as a professional whistleblower, suing drug...