Dr. Nussbaum has been an active member of the International Academy of Gnathology for over thirty years. He has presented in the United States and Canada, and published on topics related to comprehensive multidisciplinary Ortho-Restorative treatment.

As an Affiliated instructor, Dr. Nussbaum taught at the University of Washington dental school in the restorative department. He maintains a general practice in the Seattle Washington area (Renton) with emphasis on Gnathologic and Orthopedic treatment.

Outside of Dentistry Dr. Nussbaum enjoys hiking the local nature trails and photographing the variety of flowers he comes across. Indoors he can be found wood working, and is known as Mr. Fix it. His favorite past times though, are horsing around with his 6 young grandchildren, and pretending to be a sous chef to his lovely wife of 44 years.