Dr. Feigal completed dental school (1971), pediatric dentistry (1977) and Ph.D.(1979) training at the University of Minnesota. He serves as the Samuel D. Harris Professor of Pediatric Dentistry, the Director of the Graduate Program in Pediatric Dentistry, and the Head of the Division of Pediatric Dentistry within the Department of Orthodontics and Pediatric Dentistry, and he serves as the Associate Dean for Graduate Programs and Facilities for the School of Dentistry.

Dr. Feigal teaches in undergraduate and graduate education within the School of Dentistry with areas of expertise including behavior management of children patients, restorative materials for pediatric dentistry, nutrition and sugar substitutes, and adhesive bonding to enamel. Dr. Feigal lectures widely on pediatric topics in international and national fora. He has published over 60 articles in scientific journals.

Sixteen years in active private practice, twenty years of research funding, and key leadership in American Dental Association and American Academy of Pediatric Dentistry committee work round out Dr. Feigal's background. He served a term as a member of the ADA Council on Dental Therapeutics and a term as Chair of the AAPD Education Committee, and he is a Diplomat of the American Board of Pediatric Dentistry.