Information submitted to the commissioner, as required by Section 929, shall be confidential pursuant to Section 7929.000 of the Government Code and exempt from the California Public Records Act (Division 10 (commencing with Section 7920.000) of Title 1 of the Government Code). Additionally, that information shall not be subject to subpoena or subpoena duces tecum. Testimony by the commissioner, the commissioner’s staff, an employee of the department, or a person to whom the report required by Section 929 was disclosed, regarding the contents of any report submitted pursuant to Section 929, shall be inadmissible as evidence in a civil proceeding.