If requested as part of an investigation authorized by the secretary, a licensed dentist who operates a dental practice in the state of Washington shall provide to the secretary:
(1) Documentation that the licensed dentist is:
(a) The owner, purchaser, or lessee of the dental equipment;
(b) The owner, purchaser, or lessee of the office the dentist occupies; and
(c) Associated with other persons in the practice of dentistry, whether or not the associate is licensed to practice dentistry.
(2) All contracts or agreements governing the dental practice business relationships with co-owners, partners, and associates.