Wash. Admin. Code § 246-12-300
It is the responsibility of each practitioner to maintain their correct name on file with the department. The practitioner shall submit in writing to the department a request for a name change along with acceptable documentation. Acceptable documentation includes a copy of a marriage certificate, divorce decree or court order of legal name change.
[Statutory Authority: RCW 18.130.040, 18.130.050, 43.70.040, and 43.70.280. WSR 26-11-023, s 246-12-300, filed 5/14/26, effective 6/14/26. Statutory Authority: RCW 43.70.280. WSR 98-05-060, § 246-12-300, filed 2/13/98, effective 3/16/98.]