Cal. CCP § 1062.5

Any insurer who issues policies of professional liability insurance to health care providers for professional negligence, as defined in Chapter 1 as amended by Chapter 2, Statutes of 1975, Second Extraordinary Session, any health care provider covered by such a policy, or any potentially aggrieved person, may bring an action in the superior court for a declaration of its, his, or her rights, duties, and obligations under Chapter 1 as amended by Chapter 2, Statutes of 1975, Second Extraordinary Session.

The court shall permit any of the following persons to intervene in the action:

(1) The Attorney General.

(2) Any other person whose appearance is determined by the court to be essential to a complete determination or settlement of any issues in the action.

The action shall be commenced in the superior court in the county in which the Attorney General is required to reside and keep his office pursuant to Section 1060 of the Government Code.

The action shall be set for trial at the earliest possible date and shall take precedence over all cases other than those in which the state is a party.

The court may make a binding declaration of the rights, duties, and obligations of the insurer, whether or not further relief is or could be claimed at the time. The declaration may be affirmative or negative in form and effect and shall have the force and effect of a final judgment.

If the declaration is appealed, the appeal shall be given precedence in the court of appeal and Supreme Court and placed on the calendar in the order of its date of issue immediately following cases in which the state is a party.

The remedy established by this section is cumulative, and shall not be construed as restricting any remedy established for the benefit of any party to the action by any other provision of law. No declaration under this section shall preclude any party from obtaining additional relief based upon the same facts.