Dr. Gretzinger is a lifelong resident of the Kitchener Waterloo area, graduating from the University of Western Ontario in 1981 with a Bachelor of Science and 1985 with his Doctor of Dental Surgery.

He has been in practice in Waterloo since graduating. Dr. Gretzinger and his team are dedicated to providing a full complement of dental services with the strongest emphasis on prevention. Constant innovation and a dedication to continuing education are hallmarks of his practice.

Dr.Gretzinger is married to Mindy, has four children and lives in Heidelberg.