HHS OCR report ยท 2023
Maximus, Inc. data breach
OCR report facts
- Covered entity
- Maximus, Inc.
- Entity type
- Business Associate
- State
- Virginia
- Individuals affected
- 9,179,390
- Submission date
- Aug 4, 2023
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Maximus, reported that a software application used by its business associate (BA) exposed the protected health information (PHI) of 9,179,390 individuals. The PHI involved included names and claims information. The BA notified HHS, the affected individuals, and provided substitute notice. In response to the breach, the BA provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards to better protect PHI.
Text as published on the HHS OCR breach portal.
Other reports by Maximus, Inc.
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Maximus, Inc. | VA | Business Associate | 4,955 | Apr 25, 2025 | Unauthorized Access/Disclosure | Archive (closed) |
Frequently asked questions
How many people were affected by the Maximus, Inc. data breach?
The report to HHS OCR lists 9,179,390 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Aug 4, 2023.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Network Server.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Maximus, Inc. legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Maximus, Inc..