Wash. Rev. Code § 43.70.117
(3) At least ten working days prior to the first day of volunteer practice, the volunteer health care professional must submit to the department an attestation that includes, but is not limited to, the following:
(7) Any organization sponsoring a medical clinic or health care event using the services of any volunteer health care professional permitted to practice under this section must:
[ 2014 c 126 s 1.]