NAHGA Claim Services

Disclosed Nov 19, 2025181,160 affectedConfirmed

What is known

People affected	181,160 (as reported by the organization)
Disclosed	Nov 19, 2025
Discovered	Apr 10, 2025
Happened	Apr 8, 2025
Attack	Ransomware
Data exposed	NamesHealthSocial Security numbersGovernment IDsAddresses
Sector	Healthcare · US
Status	Confirmed

Sources

Official noticeoag.ca.gov

California Attorney General breach notice: NAHGA Claim Services

Official noticeatg.wa.gov

Washington Attorney General breach notice: NAHGA Claim Services

Official noticejustice.oregon.gov

Oregon DOJ breach notice: NAHGA Claim Services

Official noticeocrportal.hhs.gov

HHS OCR breach report: NAHGA Claim Services (Health Plan, ME)

Official noticeoag.my.site.com

Texas Attorney General data security breach report BR-0004731: NAHGA Claim Services

Official noticeago.vermont.gov

Vermont Attorney General: 2025-12-15 NAHGA Claim Services Data Breach Notice to Consumers

Notices filed

TotalNov 19, 2025

HHS OCR21,834 people

Residents of CADec 15, 2025

California AGCount not stated

Residents of WADec 15, 2025

Washington AG1,621 people

Residents of ORDec 15, 2025

Oregon DOJ181,160 people

Residents of VTDec 15, 2025

Vermont AGCount not stated

Residents of TXDec 16, 2025

Texas AG46,372 people

History of this record

source2026-09-25

empty to https://ago.vermont.gov/document/2025-12-15-nahga-claim-services-data-breach-notice-consumersby backfillSource

data_types2026-09-25

["names","health"] to ["names","health","ssn","government-id","addresses"]by backfillSource

records_basis2026-09-25

hhs to organizationby backfillSource

records2026-09-25

21834 to 181160by backfillSource

data_types2026-09-25

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

records_basis2026-09-25

empty to hhsby backfillSource

records2026-09-25

empty to 21834by backfillSource

disclosed2026-09-25

2025-12-15 to 2025-11-19by backfillSource

sector2026-09-25

other to healthby backfillSource

attack2026-09-25

unknown to ransomwareby backfillSource

discovered2026-09-25

empty to 2025-04-10by backfillSource

occurred2026-09-25

empty to 2025-04-08by 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 NAHGA Claim Services