California Code, Health and Safety Code - HSC § 1644.3

(a) On request of a child conceived by assisted reproduction using donor gametes who attains 18 years of age, a gamete bank licensed in this state that collected the gametes used in the assisted reproduction shall provide the child with identifying information of the donor who provided the gametes, unless the donor signed and did not withdraw a declaration under paragraph (2) of subdivision (b) of Section 1644.2. If the donor signed and did not withdraw the declaration, the gamete bank shall make a good faith effort to notify the donor, who may elect under subdivision (c) of Section 1644.2 to withdraw the declaration and agree to release the donor's information.

(b) On request of a child conceived by assisted reproduction using donor gametes who attains 18 years of age, a gamete bank licensed in this state that received the gametes used in the assisted reproduction from another gamete bank shall disclose the name, address, telephone number, and email address of the gamete bank from which the gametes were received.

(c) Regardless whether a donor signed a declaration under paragraph (2) of subdivision (b) of Section 1644.2, on request from a child conceived by assisted reproduction using donor gametes who attains 18 years of age, or, if the child is a minor, by a parent or guardian of the child, a gamete bank licensed in this state that collected the gametes used in the assisted reproduction shall provide the child or, if the child is a minor, the parent or guardian of the child, access to nonidentifying medical information provided by the donor.

(d) This section does not apply to gametes collected from a donor whose identity is known to the recipient of the gametes at the time of the donation.

(e) This section shall apply only to gametes collected on or after January 1, 2020.