Susan Kay Mosier, M.D. (born July 10, 1959) is the current Secretary of the Kansas Department of Health and Environment, since December 2014. On November 13, 2014, Kansas Governor Sam Brownback named Dr. Mosier as the Interim Secretary, replacing Dr. Robert Moser, who stepped down at the end of November. Mosier was a Republican member of the Kansas House of Representatives, representing the 67th district.