Yes, it is only possible to access Kaiser Permanente Online records if one is a member. Attempting to log on to the online record site at KP.org after one is no longer a Kaiser member results in an error message.
The message informs the user that "you're no longer a Kaiser Permanente member and aren’t eligible to use our site’s secure features". The health encyclopedia and other material is still accessible. They refer the user to call the number 1-800-556-7677. To access material via this number, the Kaiser Permanente Health/Medical record number will be necessary. The hours to call are Monday - Friday 6 a.m. to 7 p.m. PST and 7 a.m. to 7 p.m. PST on Saturday and Sunday.