Behavioral Risk Factor Surveillance System - Administered by the Center for Disease Control (CDC), the BRFSS collects regional-level information on the health status of Americans on an annual basis. The most recent data used in this map is from 2012 and 2013. More information at http://www.cdc.gov/brfss/.
Medicare Claims Data – Derived from de-identified patient-level claims from the Centers for Medicare and Medicaid Services (CMS). Data used in this map is from 2014. More information available at https://www.resdac.org/cms-data/file-family/Medicare-Claims.
Medicare Physician Compare provides information on the specialties, practices and practice locations of physicians who treat Medicare beneficiaries. Data comes from 2016. More information available at https://data.medicare.gov/data/physician-compare.