California Code, Family Code - FAM § 3768

(a) An employer or other person providing health insurance who willfully fails to comply with a valid health insurance coverage assignment order entered and served on the employer or other person pursuant to this article is liable to the applicant for the amount incurred in health care services that would otherwise have been covered under the insurance policy but for the conduct of the employer or other person that was contrary to the assignment order.

(b) Willful failure of an employer or other person providing health insurance to comply with a health insurance coverage assignment order is punishable as contempt of court under Section 1218 of the Code of Civil Procedure.