Dr. Nussbaum is a graduate of the University of Washington School of Dentistry. Soon after graduation he co-founded the Puget Sound Gnathology Study Club of the Olin Loomis study clubs. There, he received training in Gnathology and Gnathologic Orthopedics. Additionally, he is an active member in both the International Academy of Gnathology, and the American Academy of Gnathologic Orthopedics where he served as one of the teaching faculty.
Dr. Nussbaum has lectured in the United States and Canada. Furthermore, he has published on topics relating to comprehensive and multidisciplinary ortho-restorative treatment.
In recent years, he has also taught part time at the University of Washington Dental School in the restorative department and maintains a full time practice in Renton, Washington.