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Regulator-posted notice

Breach notice filed by On Lok Senior Health Services (July 2021)

Organization named: On Lok Senior Health Services Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) with a submission date of July 13, 2021.

Organization as reported
On Lok Senior Health Services, CA
Entity type as reported
Health Plan
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
July 13, 2021
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 12014, row:3153)
Archived copy
Held in the private archive (provenance)

The covered entity (CE), On Lok Senior Health Services, reported that it experienced a ransomware attack that affected the electronic protected health information (ePHI) of 1,643 individuals. The ePHI involved included names, dates of birth, addresses, diagnoses/conditions, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, and the media. The CE also created a call center and offered complimentary credit monitoring services. In response to the breach, the CE implemented additional administrative, technical, and security safeguards to better protect its ePHI. OCR provided technical assistance to the CE regarding the HIPAA Security Rule.

The source's own words, from the revision above.

Figures, per source

  • 1,643 individuals affected (total reported), as reported by the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), source date July 13, 2021, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date at the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals)
  • Observed by BreachRecords (revision 12014)
  • Approved by a reviewer

Organizations linked by a reviewer

  • On Lok Senior Health Services Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, from the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), retrieved 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

Request a correction

A record that disagrees with its source, names the wrong organization or duplicates another is corrected after review. This form is about Breach notice filed by On Lok Senior Health Services (July 2021). We acknowledge every request within two business days. We reply by email.

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