Central Texas Medical Specialists
Disclosed Aug 21, 20215 years ago36,503 affectedConfirmed
The covered entity (CE), Central Texas Medical Specialists, dba Austin Cancer Centers, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 36,503 individuals. The PHI involved included names, dates of birth, addresses, Social Security numbers, claims information, diagnoses, medications, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional administrative, technical, and security safeguards. During the investigation, OCR provided the CE with technical assistance regarding the requirements of the HIPAA Security Rule.
What is known
| People affected | 36,503 (as reported by the organization) |
|---|---|
| Disclosed | Aug 21, 2021 |
| Happened | Jul 21, 2021 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Indiana Attorney General 2021 data breach report: Central Texas Medical Specialistsin.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Central Texas Medical Specialists (Healthcare Provider, TX)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| Indiana AGresidents of IN | Aug 21, 2021 | 13 |
| HHS archivetotal | Sep 10, 2021 | 36,503 |
History of this record
- 2026-09-25 · attack: unknown to hacking · backfill source
- 2026-09-25 · data_types: [] to ["names","health"] · backfill source
- 2026-09-25 · summary: empty to The covered entity (CE), Central Texas Medical Specialists, dba Austin Cancer Centers, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 36,503 individuals. The PHI involved included na · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (Indiana AG), confirmed by Indiana AG. Record counts are as reported. Not legal advice.