Medicare Compliance Review of University of California, Davis, Medical Center for 2011 Through 2013

University of California, Davis, Medical Center (the Hospital), located in Sacramento, California, complied with Medicare billing requirements for 130 of the 231 inpatient and outpatient claims we reviewed. However, the Hospital did not fully comply with Medicare billing requirements for the remaining 101 claims, resulting in overpayments of $2.4 million for calendar years 2011 through 2013. These overpayments occurred primarily because the Hospital's controls were not adequate to prevent incorrect billing of these Medicare claims within the selected risk areas that contained errors.