Data breach
Hematology Oncology Consultants
- Records
- 111,143
- Breach date
- 17 October 2025Estimated
- Added
- 16 December 2025
What was exposed
7 types of data · 1 puts you at serious risk
- Dates of birth111,143
- Names73,384
- Phone numbers64,918
- Street addresses50,661
- Social security numbers27,689
- Email addresses8,247
- Home addresses1
About this breach
Hematology Oncology Consultants suffered a data breach in October 2025. The leaked dataset holds 111,143 records. It was added to this catalogue on 16 December 2025.
What Information Was Compromised?
The records include dates of birth, names, phone numbers, street addresses, social security numbers, email addresses and home addresses. Social security numbers can be used for fraud and identity theft.
It is listed as a sensitive breach: an email check does not name it, and counts it among the breaches that are not listed publicly.
What Should You Do If You Were Affected?
Consider a credit freeze or a fraud alert, and watch for accounts or loans opened in your name. Expect scam calls and texts that use your real details. Be wary of emails and messages that mention this breach or ask you to confirm personal details.
There is no public write-up of this breach yet: this summary is written from its record.