(a)Time. Respondent shall file a written answer with the commission and serve a copy on disciplinary counsel within twenty-one days after service of the statement of charges, unless the time is extended by the commission.(b)Waiver of privilege. The raising of a mental or physical condition by respondent as a defense constitutes a waiver of respondent's medical confidentiality privilege.Wash. Commi. Jud. Cond. R. Proce. 20