The Medicare Part D opioid prescribing mapping tool is an interactive tool that allows the user to see both the number and percentage of opioid claims at the local level in order to better understand how this critical issue impacts communities nationwide. By openly sharing data in a secure, broad, and interactive way, the Center for Medicaid and Medicare Services (CMS) and the U.S. Department of Health and Human Services (HHS) believe that this level of transparency will inform community awareness among providers and local public health officials.