- State
- CA
- Covered entity type
- Health Plan
- Individuals affected
- 638
- Business associate present
- No
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Paper/Films
- First seen by InfoSec Signals
- 9/23/2026
- Last seen in OCR export
- 9/23/2026
OCR description
Kaiser Foundation Health Plan (Kaiser), the covered entity (CE), reported that it had impermissibly disclosed protected health information (PHI) due to a flaw in its mail merge and quality assurance process. The breach affected 638 individuals. The PHI involved included names, medications prescribed, and health plan members. Following the breach, Kaiser strengthened its quality assurance process for mail merging and provided training on the revised process as well as refresher HIPAA training on protecting the privacy and security of PHI.
Change history
- 9/23/2026Added to OCR's archive list
Source: HHS OCR Breach Portal, U.S. Department of Health and Human Services, Office for Civil Rights about this source
Records are reproduced as published; entity names and figures are OCR's.