- Evidence-based medicine (EBM)
- Medical informatics (use of electronic health records)
Dr. Armstrong completed medical school at the University of Witwatersrand, Johannesburg, South Africa. He then completed his residency in family medicine at Highland Hospitals & The University of Rochester School of Medicine and Dentistry. Prior to joining FCM and Banner - University Medicine, Dr. Armstrong worked as a family physician at Tuba City Regional Health Care Corp., and was the clerkship director and faculty community preceptor.