Michael Mitch, Leader of the Dosimetry Group of the Radiation Physics Division, has been elected as a Fellow of the American Association of Physicists in Medicine (AAPM). A member of the AAPM since 2000, Mitch represents NIST on several committees, including the Therapy Physics Committee, Brachytherapy Subcommittee, Working Group on Brachytherapy Dosimetry, and the Calibration Laboratory Accreditation Subcommittee. He has participated as NIST representative on assessment teams for the AAPM Accredited Dosimetry Calibration Laboratories, and has co-authored several task group reports. Mitch has served on the Editorial Board of the AAPM journal Medical Physics, and is currently a Senior Associate Editor. He has made numerous presentations at AAPM meetings, and served as a faculty member for the 2009 AAPM Summer School.