HHS OCR report ยท 2021
TidalHealth Peninsula Regional data breach
OCR report facts
- Covered entity
- TidalHealth Peninsula Regional
- Entity type
- Healthcare Provider
- State
- Maryland
- Individuals affected
- 4,070
- Submission date
- May 26, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Tidal Health Peninsula Regional, reported that its business associate (BA) was the victim of a ransomware attack that affected the electronic protected health information (ePHI) of 4,070 individuals. The ePHI involved included names, dates of birth, and prescription information. The CE and BA notified HHS, affected individuals, the media, and provided substitute notice. Complimentary credit monitoring services were provided to affected individuals. In response to ...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the TidalHealth Peninsula Regional data breach?
The report to HHS OCR lists 4,070 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on May 26, 2021.
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 TidalHealth Peninsula Regional 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 TidalHealth Peninsula Regional.