Lake City Cancer Care Data Breach Affects 15,142 Patients

Lake City Cancer Care, an oncology medical practice based in Florida, experienced a data breach that affected 15,142 patients. On May 9, 2025, Integrated Oncology Network (ION), a company that provides administrative services to Lake City, determined unauthorized actors accessed certain email accounts and SharePoint files between December 13, 2024 and December 16, 2024.

The breach exposed a both personally identifiable information (PII) and protected health information (PHI), including names, addresses, dates of birth, Social Security numbers, financial account details, diagnosis information, lab results, medication details, treatment information, health insurance and claims data, provider names and dates of treatment.

Lake City Cancer Care disclosed the data breach to the U.S. Department of Health and Human Services on June 27, 2025. The information compromised in this breach could be used for identity theft, financial fraud or to gain unauthorized access to medical services.

Lake City Cancer Care's response

In addition require state and federal disclosures, affected patients will be notified by Lake City Cancer Care or Integrated Oncology Network.

If you receive a data breach notice from Lake City Cancer Care or Integrated Oncology Network about, you may want to:

• Carefully review any notice or communication you receive and sign up for free credit monitoring services, if offered.
• Monitor financial accounts and credit reports for signs of identity theft.
• Consider placing fraud alerts or credit freezes with major credit bureaus.
• Be cautious of unsolicited emails or phone calls requesting personal information.

For more details about their medical services, visit the Cancer Center at Lake City website.