The purpose of NMMS is to advance the understanding and stimulate the interest of its members in the field of mycology by providing opportunities for study, holding conferences, facilitating cooperative research, arranging forays, exchanging information among members, and interchanging specimens and information with other interested parties and organizations.

NMMS hosts monthly meetings open to all, members-only field trips and Annual Foray weekend in prime mushroom-foraging locations, and social events.

NMMS is an affiliated member of the North American Mycological Association, and NMMS members receive a discount on NAMA membership. NAMA holds Regional Forays as well as its Annual Foray.