The covered entity (CE), Petaluma Health Center, reported that it experienced a ransomware attack that compromised the protected health information (PHI) of 124,862 individuals. The PHI involved included names, dates of birth, addresses, Social Security numbers, and treatment and health insurance information. The CE notified HHS, affected individuals, the media, and posted substitute notice to its website. In its mitigation efforts, the CE implemented additional administrative and technical safeguards to better protect its PHI. OCR provided technical assistance regarding the HIPAA Rules.
2026-09-25 · attack: unknown to hacking · backfill source
2026-09-25 · data_types: [] to ["names","health"] · backfill source
2026-09-25 · records_basis: organization to hhs · backfill source
2026-09-25 · records: 2 to 124862 · backfill source
2026-09-25 · summary: empty to The covered entity (CE), Petaluma Health Center, reported that it experienced a ransomware attack that compromised the protected health information (PHI) of 124,862 individuals. The PHI involved included names, dates of birth, addresses, So · backfill source
2026-09-25 · records_basis: empty to organization · backfill source
2026-09-25 · records: empty to 2 · backfill source
2026-09-25 · disclosed: 2023-04-28 to 2023-04-24 · backfill source
2026-09-25 · discovered: empty to 2023-03-14 · backfill source
2026-09-25 · disclosed: 2023-06-02 to 2023-04-28 · backfill source
