Cal. Military and Veterans Code § 806

(a) Any entity, which was providing any type of health care coverage, including, but not limited to, health care service plans, specialized health care service plans, and health insurance to a reservist at the time the reservist was ordered to active duty, shall reinstate the health care coverage without waiting periods or exclusion of coverage for preexisting conditions. (b) Pursuant to Section 1386 of the Health and Safety Code, the Director of the Department of Managed Health Care has the authority to enforce the provisions of this section concerning any person or entity subject to regulation under Chapter 2.2 (commencing with Section 1340) of Part 2 of Division 2 of the Health and Safety Code, and may impose any applicable penalties provided for under that section. (c) Pursuant to subdivision (a) of Section 12921 of the Insurance Code, the Insurance Commissioner has the authority to enforce the provisions of this section concerning any person or entity subject to regulation under the Insurance Code, and may impose any applicable penalties provided for under the Insurance Code. (d) The enforcement and penalty provisions of the act that added this subdivision shall apply only to reservists ordered to active duty on or after January 1, 2007.