Currently California law requires that the health care service plans and health insurance policies provide group coverage to the registered domestic partner of an employee or of the insured person and provide coverage to the spouse of those persons. The new law makes an amendment to the current law by stating that the plan or policy is not able to discriminate based on same sex domestic partners or different sex domestic partners as well as same sex spouses or different sex spouses. Insurance companies are required to offer the same coverage to domestic partners, same sex or not, as they would to the spouse of the insured whether the same sex or not. If they willfully violate the amended provisions they are committing a crime.

http://www.leginfo.ca.gov/pub/11-12/bill/sen/sb_0751-0800/sb_757_bill_20110906_enrolled.pdf