Dr. Derr earned his dental degree from the University of Nebraska Medical Center College of Dentistry in 1978. He completed a General Practice Residency at the Minneapolis VA Medical Center in affiliation with Minneapolis Children's Hospital and St. Paul Ramsey (Region's) Hospital.
Dr. Derr served part-time over 20 years at the University of Minnesota School of Dentistry where he was promoted three times to the rank of Clinical Professor. He helped direct the General Practice Residency at the University of Minnesota Hospital Dental Clinic. As a faculty member he was elected to Omicrom Kappa Upsilon Honorary Dental Fraternity.
Dr. Derr has been selected as a Top Dentist for the past six consecutive surveys of the Mpls/St. Paul and Minnesota Monthly Magazines. He provides volunteer dental service locally and internationally with numerous organizations.
Dr. Derr began his private practice in Eden Prairie in 1991, then relocated to a beautiful new building in 2008.