Dr. Lee Yardley graduated as a Doctor of Chiropractic from Palmer College of Chiropractic in Davenport, Iowa in 1978, and completed his undergraduate education at the University of Auckland, Auckland, New Zealand. In addition, he was Board Certified by the National Upper Cervical Chiropractic Association (NUCCA) in 1996 and practices in the state of Washington.

Dr. Yardley is on the NUCCA faculty, teaches advanced adjusting, and developed curriculum for the Intermediate Biomechanics program introduced in 2005. He supervises and sponsors a two year post doctoral program for doctors (from all over the North American continent) with an interest in advancing their clinical skills in a practice based on the Grostic Model. Dr. Yardley serves on the standards committee for the NUCCA organization, as one of five doctors responsible for qualifying doctors for board certification. He also Chairs the NUCCA educational committee.

Dr. Yardley has also served as research consultant on a study financed by the National Institutes of Health, and as an extension faculty member for Palmer and Logan chiropractic colleges.