(1) A provider may authorize a third-party filer to file contracts on its behalf. Under this section, a "third-party filer" means:

(a) An administrator as defined in RCW 48.110.020(1);

(b) An insurer; or

(c) A person or entity in the business of providing regulatory compliance services to providers.

(2) If a provider delegates filing authority to a third-party filer, each filing must include a letter signed by an employee of the provider authorizing the third-party filer to make filings on behalf of the provider. This subsection does not apply to a third-party filer that is an affiliate or wholly owned subsidiary of the provider.

(3) The provider may not delegate responsibility for the content of a filing to a third-party filer. The commissioner considers errors and omissions made by the third-party filer to be errors and omissions of the provider.

(4) If a third-party filer has a pattern of making filings that do not comply with this chapter, the commissioner may reject a delegation of filing authority from the provider.