Medicare Compliance Review of Mary Hitchcock Memorial Hospital for 2009 through 2012

Mary Hitchcock Memorial Hospital (the Hospital) complied with Medicare billing requirements for 190 of the 445 inpatient and outpatient services we reviewed. However, the Hospital did not fully comply with Medicare billing requirements for the remaining 255 services, resulting in net overpayments of $771,000. These errors occurred primarily because the Hospital did not have adequate controls to prevent the incorrect billing of Medicare services within the selected risk areas that contained errors. On the basis of our statistical and judgmental sample results, we estimated that the Hospital received net overpayments of at least $1.4 million.