A fifth-generation Idahoan on his grandmother's side, Moosman was raised on the southern spur of the Sawtooth Mountains in the mining town of Atlanta, Idaho, where his grandfather labored at a gold mine and Kerry attended the two-room school through the third grade. Although he went to high school in Boise and has resided there ever since, he still summers in Atlanta and has had a profound effect on that community's historic preservation.

Moosman earned a BFA in ceramics and sculpture at Boise State University. During his undergraduate years, he served as a studio assistant to the renowned Korean-born, Japanese potter John Takehara; later, he himself was a ceramics instructor at BSU and took graduate courses in ceramics.

Known for creating large-scale sculptural terra cotta earthenware vessels, he brings impeccable technique, patience, persistence, and commitment to his craft, often spending six weeks burnishing a single pot with a small agate before it is bisque and sagger-fired.

His timeless, coil-built, balanced forms have been the subject of a solo exhibition at Boise Art Museum, and he has been a featured artist at the juried Idaho Triennial Exhibition. He received an Idaho Commission on the Arts Fellowship in 2006 and Mayor's Awards in the Arts in 2013.

He has completed two significant public art projects for the City of Boise. Alley History, created in 1992, is a downtown landmark, using Idaho icons and fragments of old signs, Chinese writing, and images from popular culture. Spirit of Healing Waters, installed in 2002, focuses on the logos, advertisements, and ephemera of the old Idanha Hotel along with a respectful commemoration of the earlier, native residents of the Boise Valley.