Almeida Law Group is investigating a data breach at Wisconsin Department of Health Services. If you were affected, contact Almeida Law Group.
About Wisconsin Department of Health Services
The Wisconsin Department of Health Services (DHS) is a state government agency headquartered in Madison, Wisconsin. It is one of the largest state agencies in Wisconsin, with an annual budget of roughly $15 billion and more than 6,700 employees. DHS administers a wide range of health and social services, including Medicaid, Medicare, public health programs, mental health and substance abuse services, long-term care, and nutrition supplementation programs. On the HHS Office for Civil Rights breach portal, DHS is classified as a Health Plan.
What Happened?
Wisconsin Department of Health Services was listed in an HHS Office for Civil Rights breach portal report submitted on July 1st, 2026. According to a DHS statement dated June 30th, 2026, the incident involved letters containing personal and private information about a Supplemental Security Income (SSI) benefit increase that were mailed to outdated addresses for approximately 8,157 Medicaid SSI members. The breach type is classified as Unauthorized Access/Disclosure involving Paper/Films. This was a misdirected mailing incident, not a cyberattack or ransomware event, and no business associate was involved.
DHS discovered the incident on April 30th, 2026, immediately identified the affected individuals, and halted future mailings to incorrect addresses. Consumer notifications were sent on June 30th, 2026 — roughly two months after discovery. DHS has also reported at least three prior breach incidents affecting Wisconsin Medicaid populations: an unauthorized email account access in 2021 affecting 2,868 individuals, an accidental disclosure via emailed presentation in 2022 affecting 12,358 Medicaid members, and a 2024 security incident at partner organization Disability Rights Wisconsin potentially affecting 19,150 Medicaid members. No class action lawsuits or litigation specifically connected to this July 2026 incident had been identified as of July 2nd, 2026.
Key Facts at a Glance
- Company or Organization: Wisconsin Department of Health Services
- Industry: Government health agency / Health Plan (state Medicaid administrator)
- Location: Madison, Wisconsin
- Incident type: Unauthorized Access/Disclosure (misdirected mailing — Paper/Films)
- Date breach discovered: April 30th, 2026
- Date of consumer notification: June 30th, 2026
- Total persons affected: 8,157
- Identity theft protection offered: Free credit monitoring for one year
- Prior breach: Yes — at least three prior incidents affecting Wisconsin Medicaid populations (2021, 2022, 2024)
- Litigation status: No litigation found as of July 2nd, 2026
- Source: HHS Office for Civil Rights breach portal report (Record ID 1461523); DHS Official Statement, June 30th, 2026
What Should You Do?
If you received a notification from Wisconsin DHS about this incident, enroll in the free one-year credit monitoring offered through the dedicated call center at 800-362-3002 before any stated enrollment deadline. Even if you do not yet have a notice, you can place a fraud alert or credit freeze with the three major credit bureaus — Equifax, Experian, and TransUnion — at no cost. Review your credit reports for unfamiliar accounts or activity at AnnualCreditReport.com, and report any signs of identity theft to the FTC at IdentityTheft.gov. Because this incident involved letters related to your Medicaid SSI benefits, it is also a good idea to review any Explanation of Benefits statements and contact your benefits administrator if you notice any unexpected changes to your coverage or payments.
Your Legal Rights
If your personal or health information was involved in this breach, you may have legal rights depending on the facts of the incident and the law in your state. Almeida Law Group represents consumers in data breach and privacy litigation and can help you evaluate whether you may have a claim. Contact us at (708) 529-5418 or through our contact page for a free case evaluation.
