Kaiser adequately proved that Kuntz’s decedent enrolled with Kaiser under a CalPERS medical insurance plan which included an arbitration clause. Kaiser showed that CalPERS keeps the individual enrollment forms, just sending Kaiser electronic enrollment information. Kaiser’s electronic enrollment information showed that Kuntz’s decedent had been enrolled in the Kaiser health plan continuously since 1983. Kaiser was not required to show that it had provided the arbitration disclosures required by CCP 1363.1 because Gov. Code 22869 provides that CalPERS’ disclosures to its members satisfy the requirements of the chapter in which 1363.1 is located.