norm: yale new haven health systemno LEI · no CIKMax severity: Critical

Canonical registry

Yale New Haven Health System

ent_4a42953c78295d173c5c37a8

Compliance scorecard →🔔 Follow entity

Disclosures

1

HHS OCR · 1 jurisdiction

Incidents

—

no linked incident in sample

Max affected reported

5,556,702

as filed · HHS OCR CT

Leak-site claims

0

none in sample

Identity resolution

Canonical name: Yale New Haven Health System
Normalized: yale new haven health system— dedupe via name-norm; Microsoft / MSFT collapse to one row
GLEIF LEI: No match
SEC EDGAR CIK: None — not an SEC registrant
Domain: None on record

Disclosure history (1)newest first

CTHHS OCRas victim2025-04-11
Yale New Haven Health System (CT, healthcare provider) reported to HHS OCR a hacking/IT incident affecting a network server that compromised PHI of 5,556,702 individuals. Data elements included names, dates of birth, addresses, and Social Security numbers. The entity notified HHS, affected individuals, the media, and provided substitute notice, and implemented additional administrative, technical, and security safeguards. The OCR Wall of Shame entry indicates no business associate was involved.