Intermountain Healthcare

Disclosed Jul 16, 202128,628 affectedConfirmed

The covered entity (CE), Intermountain Healthcare, reported that its business associate (BA) experienced a ransomware attack that affected the electronic protected health information (ePHI) of 28,628 individuals. The ePHI involved included names, medical images, Social Security numbers, health insurance information, dates of birth, and other treatment information. The CE notified HHS, affected individuals, and the media. In response to the breach, the BA strengthened its technical and security safeguards to better protect its ePHI. OCR provided technical assistance to the CE regarding its Breach Notification Rule obligations.

What is known

People affected	28,628 (as reported by the organization)
Disclosed	Jul 16, 2021
Happened	Apr 6, 2021
Attack	Hacking
Data exposed	NamesHealth
Sector	Healthcare · US
Status	Confirmed

Sources

Official noticein.gov

Indiana Attorney General 2021 data breach report: Intermountain Healthcare

Official noticeocrportal.hhs.gov

HHS OCR breach report (archive, resolved): Intermountain Healthcare (Healthcare Provider, UT)

Notices filed

Residents of INJul 16, 2021

Indiana AG3 people

TotalJul 16, 2021

HHS archive28,628 people

History of this record

attack2026-09-25

unknown to hackingby backfillSource

data_types2026-09-25

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

summary2026-09-25

empty to The covered entity (CE), Intermountain Healthcare, reported that its business associate (BA) experienced a ransomware attack that affected the electronic protected health information (ePHI) of 28,628 individuals. The ePHI involved included by backfillSource

Added2026-09-25

First recordedby backfillSource

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

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