Dr. Diederich received his Bachelor of Science, Doctor of Dental Surgery and Master of Science degree in Periodontics from the University of Michigan. Before his specialty training, he spent three years in the U.S. Public Health Service as a general dentist and completed a general practice residency. After two years as a full time faculty instructor at U of M, he established a full time practice limited to periodontics in Battle Creek in 1984.

Since that time he has been a part time instructor at both Kellogg Community College and U of M, while also active in the local dental society (President 1991) and the Russell Bunting Periodontal Study Club (President 1996). Dr. Diederich is an active member of the Michigan and American Dental Associations, The American Academy of Periodontology, The International Congress of Oral Implantologists and The American Academy of Oral Implantology. He is a Diplomate of The American Board of Periodontology, a Fellow of the American College of Dentists and a past President of the Michigan Periodontal Association.

Other interests include music, amateur radio and radio controlled model aircraft.