Dr. Kenworthy attended Brigham Young University for his undergraduate education. He received his BDS and DDS degrees from the University of California at San Francisco, and his orthodontic certificate and a Master's degree from the Mayo Graduate School of Medicine.

His writings have been published in the Journal of Orofacial Pain, the Journal of Prosthetic Dentistry, the European Journal of Orthodontics, and the American Journal of Orthodontics and Dentofacial Orthopedics. He is an active member of the American Association of Orthodontists, completing his term as president of the Rocky Mountain Society of Orthodontists in 2016.

He has not had impression trays or alginate in his office since 2014. This has allowed him to become more accurate and efficient in his delivery of custom orthodontic solutions. He is immersed in digital orthodontics and enjoys sharing the solutions he has found. Dr. Kenworthy's Missoula, Montana practice supports all the fun he, his wife, and their five boys can find.