Dr. Duggan graduated from Washington and Lee University in Lexington, Virginia and earned his medical degree at the University of Alabama at Birmingham (UAB) School of Medicine in 1984. He served as a resident in general surgery for two years and completed a three year residency in urology at UAB in 1989.

Dr. Duggan is certified in urology by the American Board of Urology. He maintains membership with several national and local professional organizations including the American Urological Association, the American Medical Association, the Medical Association of the State of Alabama, the Jefferson County Medical Society, and the Birmingham Urology Club.