(1) A dental hygienist working for health care facilities or senior centers under RCW 18.29.056 shall keep readily accessible patient records for at least six years from the date of the last treatment.

(2) A dental hygienist shall respond to a written request from a patient to examine or copy a patient's record within fifteen working days after receipt. A dental hygienist shall comply with chapter 70.02 RCW for all patient record requests.

(3) A dental hygienist shall comply with the Health Insurance Portability and Accountability Act, 45 C.F.R. Part 164.