Dr. Kellar is a Lecturer at Northern Arizona University in Biological Sciences. He also holds an Adjunct Professor Faculty Position in Mechanical Engineering. At NAU, Dr. Kellar teaches a number of lecture courses and manages the Anatomy & Physiology Teaching Laboratory where he has implemented new blended learning teaching strategies to meet unique classroom challenges. He has over 15 years of experience in the research, development and regulatory approval of medical devices, cell-based products, and tissue engineered technology. He is also Founder and President of Development Engineering Sciences, LLC, a biomedical consulting firm.