Mission Neighborhood Health Center

Disclosed Dec 19, 20253,741 affectedConfirmed

The covered entity (CE), Mission Neighborhood Health Center, reported that a subcontractor of its business associate (BA) experienced a hacking attack that affected the protected health information (PHI) of 3,471 individuals. The PHI involved included demographic information. The CE notified HHS, the affected individuals, and the media. In response to the breach, the CE and BA implemented additional administrative, technical, and security safeguards to better protect PHI.

What is known

People affected	3,741 (as reported to HHS)
Disclosed	Dec 19, 2025
Happened	Nov 1, 2024
Attack	Hacking
Data exposed	NamesHealth
Sector	Healthcare · US
Status	Confirmed

Sources

Official noticeoag.ca.gov

California Attorney General breach notice: Mission Neighborhood Health Center

Official noticeocrportal.hhs.gov

HHS OCR breach report (archive, resolved): Mission Neighborhood Health Center (Healthcare Provider, CA)

Notices filed

TotalDec 19, 2025

HHS archive3,741 people

Residents of CAJan 7

California AGCount not stated

History of this record

attack2026-09-25

unknown to hackingby backfillSource

data_types2026-09-25

[] to ["names","health"]by backfillSource

records_basis2026-09-25

empty to hhsby backfillSource

records2026-09-25

empty to 3741by backfillSource

disclosed2026-09-25

2026-01-07 to 2025-12-19by backfillSource

summary2026-09-25

empty to The covered entity (CE), Mission Neighborhood Health Center, reported that a subcontractor of its business associate (BA) experienced a hacking attack that affected the protected health information (PHI) of 3,471 individuals. The PHI involvby backfillSource

Added2026-09-25

First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

Everything about Mission Neighborhood Health Center