Dr. Armstrong attended the University of Colorado in Boulder, and Midwestern State University in Texas, where he received a Bachelor of Science in Radiology. He spent eight years in the United States Air Force, where he worked in different parts of the country and Southeast Asia as a radiology technologist, CT technologist, interventional technologist, and Radiology Quality Control Officer. He received a Masters Degree in Biomedical Sciences, and Doctor of Podiatric Medicine from Barry University. He did his residency at Mount Sinai Medical center in Miami Beach, Florida. Dr. Armstrong is nationally known for his work in radiology and imaging of the foot and ankle. He regularly presents at conferences, publishes in scientific journals and is frequently invited to speak at professional meetings. He is the Associate Professor of Radiology and now the Interim Dean at Barry University School of Podiatric Medicine.