Nephrology Associates Medical Group
Disclosed Feb 27, 20267 months ago4,631 affectedConfirmed
What is known
| People affected | 4,631 (as reported to HHS) |
|---|---|
| Disclosed | Feb 27, 2026 |
| Happened | May 19, 2025 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: Nephrology Associates Medical Groupoag.ca.gov · Official notice | Official notice |
| HHS OCR breach report: Nephrology Associates Medical Group (Healthcare Provider, CA)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS OCRtotal | Feb 27 | 4,631 |
| California AGresidents of CA | Mar 26 |
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 4631 · backfill source
- 2026-09-25 · disclosed: 2026-03-26 to 2026-02-27 · 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.