All Breaches
April 28, 2026 Verified Sensitive Record Healthcare

Meridian Health Plan of Illinois 2026 Data Breach

The Meridian Health Plan of Illinois 2026 data breach resulted from some providers being given improper access to an online system, allowing someone without authorization to potentially view…

21 Thousand
Reported Records
8
Data Types
Medium
Severity
Yes
Verification

Exposed Data Types

8
Personal information
Protected health information
Member names
Member id numbers
Dates of birth
Contact information
Limited eligibility information
Limited claims-related information

Additional Information

Added DateJuly 27, 2026
Breach DateApril 28, 2026
Domainilmeridian.com
SourceOfficial Meridian Health Plan of Illinois notice confirming improper provider-portal access and possible viewing or downloading of member information affecting 21,027 people
Last Content UpdateJuly 27, 2026

Verification and editorial method

LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.

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Company Information

Company NameMeridian Health Plan of Illinois
SectorHealthcare
CountryUnited States
Websiteilmeridian.com

Risk Level

Medium

The reported impact exceeds 10 thousand and falls within the medium severity band.

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