HHS OCR report ยท 2018
TMC HealthCare data breach
OCR report facts
- Covered entity
- TMC HealthCare
- Entity type
- Healthcare Provider
- State
- Arizona
- Individuals affected
- 1,776
- Submission date
- Sep 7, 2018
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Paper/Films
- Business associate present
- No
- Status
- Archive (closed)
OCR description
On July 12, 2018, the covered entity (CE), TMC HealthCare, discovered that paper files containing the protected health information (PHI) of 1,776 individuals had inadvertently been left unsecured in an unlocked suite used for storage. The types of unsecured PHI involved in the incident included patients' names, dates of birth, addresses, medical record numbers, insurance ID or Social Security numbers, diagnoses, treatment information, provider information, medications, test results, and othe...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the TMC HealthCare data breach?
The report to HHS OCR lists 1,776 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Sep 7, 2018.
What type of breach was it?
The OCR portal lists the type of breach as Unauthorized Access/Disclosure, with the breached information located in: Paper/Films.
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 TMC HealthCare 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 TMC HealthCare.