Dr Michael G Stabin is a Certified Health Physicist. He taught courses at NV5/Dade Moeller and performed safety analyses for Hanford workers potentially exposed to internal emitters. Previously, he was an associate professor in the Department of Radiology and Radiological Sciences at Vanderbilt University, in Nashville, TN. Before that he was a visiting professor at the Universidade Federal de Pernambuco in Recife, Brasil for two years, and was a scientist at the Radiation Internal Dose Information Center of Oak Ridge Institute for Science and Education for 15 years. He has a Bachelor of Science and a Master of Engineering degree in Environmental Engineering (Health Physics emphasis) from the University of Florida and received his PhD in Nuclear Engineering (Health Physics emphasis) from the University of Tennessee. He is a Certified Health Physicist (1988, and recertified since then). He is a member of the Health Physics Society, the Society of Nuclear Medicine. He has over 225 publications in the open literature, most in the area of internal dosimetry for nuclear medicine applications, including complete textbooks on health physics and internal dose assessment. He has served as member and chair of the American Board of Health Physics Certification Examination Panel (Part I and II), and as an associate editor of the Health Physics Journal from 1992 until now. He also serves on task groups of the Society of Nuclear Medicine (the RAdiation Dose Assessment Resource, RADAR), American Association of Physicists in Medicine (AAPM) and the International Commission on Radiological Protection (ICRP). He has developed several models, methods, and tools that have become widely used in the nuclear medicine community, including the MIRDOSE and OLINDA/EXM personal computer software codes for internal dose calculations.