Buddhist Tzu Chi Medical Foundation
Disclosed Sep 9, 20215 years ago18,968 affectedConfirmed
Buddhist Tzu Chi Medical Foundation, the covered entity (CE), reported that it was the victim of a ransomware attack that compromised the protected health information (PHI) of 18,968 individuals. The PHI involved included names, addresses, dates of birth, and diagnoses. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE strengthened its administrative and technical safeguards and retrained its staff. OCR provided technical assistance regarding the HIPAA Privacy and Security Rule.
What is known
| People affected | 18,968 (as reported to HHS) |
|---|---|
| Disclosed | Sep 9, 2021 |
| Happened | Jul 15, 2021 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: Buddhist Tzu Chi Medical Foundationoag.ca.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Buddhist Tzu Chi Medical Foundation (Healthcare Provider, CA)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| California AGresidents of CA | Sep 9, 2021 | |
| HHS archivetotal | Sep 13, 2021 | 18,968 |
History of this record
- 2026-09-25 · attack: unknown to hacking · backfill source
- 2026-09-25 · data_types: [] to ["names","health"] · backfill source
- 2026-09-25 · records_basis: empty to hhs · backfill source
- 2026-09-25 · records: empty to 18968 · backfill source
- 2026-09-25 · summary: empty to Buddhist Tzu Chi Medical Foundation, the covered entity (CE), reported that it was the victim of a ransomware attack that compromised the protected health information (PHI) of 18,968 individuals. The PHI involved included names, addresses, · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.