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Larsen Dental Care

Disclosed Apr 18, 201412 years ago6,900 affectedConfirmed

Official notice

An unencrypted external hard drive containing the electronic protected health information (ePHI) of 6,900 individuals was stolen from a workforce member’s vehicle. The ePHI involved in the breach included names, addresses, dates of birth, email addresses, telephone numbers, dental records, medical history, health insurance numbers, and social security numbers. The covered entity (CE), Larson Dental Care LLC, provided breach notification to HHS, affected individuals and the media, and also posted notice online. Following the breach, the CE terminated the employment of the responsible workforce member. It also conducted a new risk assessment, implemented new security and privacy policies, including device and media control policies, and retrained staff. The CE improved safeguards by encrypting all computers and mobile devices containing ePHI and installing comprehensive security upgrades to its computer network. OCR obtained assurances that the CE implemented these corrective actions.

What is known

People affected6,900 (as reported to HHS)
DisclosedApr 18, 2014
HappenedMar 4, 2014
AttackLost or stolen device
Data exposedNames, Social Security numbers, Health, Insurance, Payment cards, Addresses
SectorHealthcare · US
StatusConfirmed

Sources

Source
Maine Attorney General breach notice archive: Larsen Dental Caremaine.gov · Official notice
HHS OCR breach report (archive, resolved): Larsen Dental Care (Healthcare Provider, ID)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
Maine AGresidents of MEApr 18, 20141
HHS archivetotalApr 18, 20146,900
History of this record
  • 2026-09-25 · attack: unknown to lost-device · backfill source
  • 2026-09-25 · data_types: ["names","ssn","health","insurance","payment-card","addresses","names"] to ["names","ssn","health","insurance","payment-card","addresses"] · backfill source
  • 2026-09-25 · records_basis: empty to hhs · backfill source
  • 2026-09-25 · records: empty to 6900 · backfill source
  • 2026-09-25 · summary: empty to An unencrypted external hard drive containing the electronic protected health information (ePHI) of 6,900 individuals was stolen from a workforce member’s vehicle. The ePHI involved in the breach included names, addresses, dates of birth, e · backfill source
  • 2026-09-25 · added · backfill source

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

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