Integrated Oncology Network Data Breach Lawsuit Investigation
Did you receive a shocking letter from Integrated Oncology Network? Your most sensitive medical and financial details may now be in the wrong hands. Find out how to protect yourself—and whether you can file a claim—below.
Download Official Breach Notice (PDF)What Happened?
Integrated Oncology Network (ION) uncovered an email-phishing intrusion that lasted from December 13–16, 2024. During that window, attackers accessed a small number of employee email and Microsoft SharePoint accounts. ION’s internal investigation, completed on May 9, 2025, indicates the attackers sought to launch additional phishing campaigns but also viewed or exfiltrated files containing patient data.
What Information Was Exposed?
The compromised files contained a wide range of personally identifiable information (PII) and protected health information (PHI):
- Full names and addresses
- Dates of birth
- Social Security numbers (limited subset)
- Government-issued ID numbers
- Financial account details
- Diagnosis information & lab results
- Medication and treatment details
- Health-insurance and claims data
- Provider names and dates of treatment
Timeline of Key Events
- Dec 13–16, 2024: Unauthorized access occurs.
- May 9, 2025: Forensic investigation concludes.
- Jun 13, 2025: Physician practices notified.
- Jun 27, 2025: Patient notification letters mailed.
Why This Breach Matters
Unlike a single-factor breach that might reveal just a name or email address, the ION incident involves both financial and deeply personal medical data. Such information can be exploited for:
- Medical identity theft—fraudulent insurance claims or prescription drug abuse.
- Traditional identity theft—opening new credit lines with exposed SSNs.
- Black-mail or phishing—leveraging sensitive diagnosis details.
Protecting Yourself After the ION Breach
- Monitor Explanation of Benefits and medical bills for unrecognized services.
- Check bank and credit-card statements weekly; dispute unauthorized charges immediately.
- Review your credit reports (annualcreditreport.com) and consider a free fraud alert or security freeze.
- Enroll in any complimentary credit-monitoring or identity-protection services offered by ION.
- Be cautious of unsolicited calls or emails requesting additional personal information.
About Integrated Oncology Network
Founded in 2008 and headquartered in Nashville, Tennessee, Integrated Oncology Network operates more than 50 community-based cancer care centers across 10 states. The group supports independent oncology practices with management services, advanced analytics, and technology solutions. In late 2024, Cardinal Health announced plans to acquire ION for $1.115 billion in cash.
Your Legal Options
U.S. privacy laws allow consumers to seek compensation when companies fail to adequately safeguard sensitive information. If you received an ION breach notice—or think your data may have been involved—you could:
- Join or initiate a class-action lawsuit to recover potential monetary damages.
- Pursue reimbursement for out-of-pocket expenses (credit-monitoring fees, lost time, fraudulent charges).
- Secure injunctive relief requiring ION to strengthen its cybersecurity posture.
Consult a qualified data-breach attorney promptly to preserve your rights and meet any applicable filing deadlines.
Frequently Asked Questions
How do I know if Integrated Oncology Network exposed my data?
ION mailed breach notices beginning June 27, 2025. If your letter matches the dates of the incident (Dec 13–16, 2024), your data was likely involved. You can also contact ION’s dedicated call center at 855-361-0308.
What should I do if my Social Security number was included in the Integrated Oncology Network breach?
Immediately place a fraud alert (free) or security freeze with the three major credit bureaus, monitor your credit reports, and file an Identity Theft Report with the FTC if you detect misuse.
Did Integrated Oncology Network offer free credit monitoring?
ION’s notification letters outline any complimentary credit-monitoring or identity-theft services. Enroll as soon as possible—delays can reduce available coverage periods.
Can I sue Integrated Oncology Network for the data breach?
Potentially, yes. Courts often allow affected individuals to seek damages for negligence, invasion of privacy, and statutory violations. An experienced breach-litigation attorney can advise on eligibility and deadlines.
Will the Cardinal Health acquisition impact my claim?
The acquisition does not eliminate ION’s liability for the breach. Any successor entity typically assumes such liabilities, so your claim should remain viable.