MalwareHealthcareHealthcareRansomwareRansom DemandedData EncryptedCustomer Data InvolvedIdentity (basic)Government IDPHIHealth (basic)MediumContained

Northwest Medical Homes, LLC

bd_253dc7abb1cfa2b3 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 13, 2025

Filed

Mar 5, 2026

To disclose

42 weeks

Affected

517state residents only

Linked

5 filings

Confidence

70%

Full breach record for Northwest Medical Homes, LLC →2 incidents on file

Northwest Medical Homes, LLC reported a ransomware cyberattack affecting 517 Washington residents. Unauthorized access occurred between March 19 and May 13, 2025. The incident involved encryption of data and potential compromise of names, addresses, and health information. The company engaged forensic experts, notified law enforcement, and provided credit monitoring services.

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Washington clock✗ WA AG >90d42 weeks discovery → filing

Incident timeline

undetected · 55 days

discovery → filing · 42 weeks / 296 days

Mar 19, 2025

Begins

May 13, 2025

Discovered

Mar 5, 2026

Filed

vs. sector median

+30 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_1301f98be6b637932026-03-05Verified
California State AGbd_204504bd7745b2582026-03-05Verified
Oregon State AGbd_df26b3d2bd7a4eaa2026-03-05Candidate
Vermont State AGbd_bf69e32ae683423c2026-02-26 · +7dVerified

Name: Northwest Medical Homes, LLC
norm: northwest medical homes

Name: Northwest Medical Homes, LLC
norm: northwest medical homes
Industry: Healthcarellm

Discovered: May 13, 2025
Breach occurred: Mar 19, 2025 – May 13, 2025
Undetected for: 55 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 5, 2026
Affected individuals: 517state-resident count only
Data types: Identity (basic)PHI
Data elements: NameSocial Security numberDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement
Initial access: valid_credentials

During the incident: Initiated our incident response
Engaged additional third-party experts
Commenced an investigation
Took steps to secure our environment
Hardened and enhanced our network security
Completed a digital forensic investigation
Notified law enforcement regarding this incident
Arranged for you to activate complimentary credit monitoring and identity restoration services
Changes made: Hardened and enhanced our network security
Continuous awareness training and assessment of our data security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 42 weeks(296 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Vermont State AGFeb 26 · first

Massachusetts State AG+7d

California State AG+7d

Oregon State AG+7d

Washington State AG+7d · this page

Pattern: first filing Feb 26 (VT), last Mar 5 (WA) — a 7-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA36937.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 5, 2026
Raw hash: 3b0e42c84aa3174202e33ad57838d18d286a3146eab966ad010f0979ab7e54f9

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityNorthwest Medical Homes, LLC

Victim entityNorthwest Medical Homes, LLC

Incidentdiscovered May 13, 2025

Stated responseInitiated our incident response

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com