Dr. Koester received his dental degree and graduated magna cum laude from Southern Illinois University School of Dental Medicine in Alton, IL. He received his undergraduate degree in Biological Sciences from Southern Illinois University Edwardsville in Edwardsville, IL.
Dr. Koester is Invisalign and Laser certified. He is a member of the American Dental Association, Illinois State Dental Society, Delta Sigma Delta, and Omicron Kappa Upsilon National Dental Honor Society.