 There are more than 1,100 members and 32 chapters.Les Shephard, vice president of Sandia National Laboratories' Energy, Security, and Defense Technology Center, said in February 2009 of the INMM and the American Nuclear Society, 

INMM is led by an executive committee of nine members, including a president, vice president, secretary, treasurer, four members-at-large, and the immediate past president.In addition, INMM has several standing and two technical committees.