HHS OCR report ยท 2018
Cancer Treatment Centers of America (CTCA) at Western Regional Medical Center data breach
OCR report facts
- Covered entity
- Cancer Treatment Centers of America (CTCA) at Western Regional Medical Center
- Entity type
- Healthcare Provider
- State
- Arizona
- Individuals affected
- 41,948
- Submission date
- Nov 26, 2018
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Cancer Treatment Centers of America, reported that an employee was the victim of an email phishing attack affecting 41,948 individuals. The protected health information (PHI) involved included names, addresses, Social Security numbers, diagnoses/conditions, and treatment information. CTCA notified HHS, affected individuals, and the media. In its mitigation efforts, the CE implemented additional administrative and technical safeguards and retrained its staff. OCR ob...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Cancer Treatment Centers of America (CTCA) at Western Regional Medical Center data breach?
The report to HHS OCR lists 41,948 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Nov 26, 2018.
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 Cancer Treatment Centers of America (CTCA) at Western Regional Medical Center 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 Cancer Treatment Centers of America (CTCA) at Western Regional Medical Center.