Cal. Health & Safety Code § 1358.12
(a)
(2) With respect to eligible persons, an issuer shall not take any of the following actions:
(b) An eligible person is an individual described in any of the following paragraphs:
(1) The individual is enrolled under an employee welfare benefit plan that provides health benefits that supplement the benefits under Medicare and either of the following applies:
(2) The individual is enrolled with a Medicare Advantage organization under a Medicare Advantage plan under Medicare Part C, and any of the following circumstances apply:
(D)
(i) The Medicare Advantage plan in which the individual is enrolled reduces any of its benefits or increases the amount of cost sharing or premium or discontinues for other than good cause relating to quality of care, its relationship or contract under the plan with a provider who is currently furnishing services to the individual. An individual shall be eligible under this subparagraph for a Medicare supplement contract issued by the same issuer through which the individual was enrolled at the time the reduction, increase, or discontinuance described above occurs or, commencing January 1, 2007, for one issued by a subsidiary of the parent company of that issuer or by a network that contracts with the parent company of that issuer. If no Medicare supplement contract is available to the individual from the same issuer, a subsidiary of the parent company of the issuer, or a network that contracts with the parent company of the issuer, the individual shall be eligible for a Medicare supplement contract pursuant to paragraph (1) of subdivision (e) issued by any issuer, if the Medicare Advantage plan in which the individual is enrolled does any of the following:
(E) The individual demonstrates, in accordance with guidelines established by the secretary, either of the following:
(4) The individual meets both of the following conditions:
(A) The individual is enrolled with any of the following:
(5) The individual is enrolled under a Medicare supplement contract, and the enrollment ceases because of any of the following circumstances:
(6) The individual meets both of the following conditions:
(c)
(1) In the case of an individual described in paragraph (1) of subdivision (b), the guaranteed issue period begins on the later of the following two dates and ends on the date that is 63 days after the date the applicable coverage terminated:
(3) In the case of an individual described in subparagraph (A) of paragraph (5) of subdivision (b), the guaranteed issue period begins on the earlier of the following two dates and ends on the date that is 63 days after the date the coverage is terminated:
(d)
(e)
(2)
(f)