HHS OCR report · 2020
Health Plan of San Joaquin data breach
OCR report facts
- Covered entity
- Health Plan of San Joaquin
- Entity type
- Health Plan
- State
- California
- Individuals affected
- 418,842
- Submission date
- Dec 21, 2020
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Health Plan of San Joaquin, reported that several employees were the victims of an email phishing scheme that affected the electronic protected health information (ePHI) of 418,842 individuals. The ePHI involved included names, Social Security numbers, drivers’ license numbers, health insurance information, claims and financial information, dates of birth, lab results, prescription information, and other treatment information. The CE notified HHS, affected individua...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Health Plan of San Joaquin data breach?
The report to HHS OCR lists 418,842 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Dec 21, 2020.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Email.
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 Health Plan of San Joaquin 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 Health Plan of San Joaquin.