HHS OCR report ยท 2023
Delta Dental of California data breach
OCR report facts
- Covered entity
- Delta Dental of California
- Entity type
- Health Plan
- State
- California
- Individuals affected
- 7,056,189
- Submission date
- Sep 5, 2023
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Delta Dental of California, reported that an exploit of a software application impacted the protected health information (PHI) of 7,056,189 individuals. The PHI involved included demographic, clinical, and financial information. The CE notified HHS, affected individuals, and the media. In response to the breach, the CE implemented new technical safeguards.
Text as published on the HHS OCR breach portal.
Other reports by Delta Dental of California
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Delta Dental of California | CA | Health Plan | 11,646 | Jan 19, 2012 | Other | Archive (closed) |
Frequently asked questions
How many people were affected by the Delta Dental of California data breach?
The report to HHS OCR lists 7,056,189 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Sep 5, 2023.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Network Server.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Delta Dental of California legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Delta Dental of California.