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The Following Notice of Data Breach Refers Only to A Subset of KP Members:

November 7, 2019

Because Kaiser Permanente takes the protection of our member data very seriously, we wish to notify you of the following matter:

What Happened?

A mailing error at Kaiser Permanente occurred between September 9, 2019 and September 19, 2019, causing a portion of 2020 Subscription Renewal notices to be mailed to another Kaiser Permanente member. All members impacted by this mis-mailing were sent notification letters on November 8, 2019. This notice is intended only for those members to whom we attempted to mail a notification, but the mail was returned as undeliverable.

What Information Was Involved?

The misdirected notices contain name and membership premium information. There is no disclosure of financial information, medical record number, Social Security Number or any other identifiers relating to a specific member.

What We Are Doing:

We have identified and corrected the cause of the mailing error and we have taken appropriate remediation measures to ensure this error does not happen again. We also sent 2020 Subscription Renewal notices to the impacted members at their correct address on October 4, 2019.

What You Can Do:

For your protection, we always encourage you to carefully review any Kaiser Permanente mailings, including the Explanation of Benefits statements you receive and contact us right away at the number on the back of your Kaiser Permanente Identification card if you spot any transactions that do not appear to be associated with health care services that you or your family members received.

For More Information:

On behalf of Kaiser Permanente, we offer our sincerest apology that this incident occurred. We assure you that safeguarding your information is one of our highest priorities. If you have any questions regarding this matter, please call Member Services (1-800-464-4000) (TTY 711) twenty-four hours a day, seven days a week.


Barbara L. Reif
Director, Health Plan Privacy and Security Compliance