MEDNAX Services
Disclosed Dec 16, 20205 years ago1,442,997 affectedConfirmed
The covered entity (CE), Pediatrix Medical Group, formerly known as MEDNAX Services, reported that multiple employees were victims of an email phishing attack affecting the protected health information (PHI) of 1,442,997 individuals. The PHI involved includes names, addresses, dates of birth, drivers’ license numbers, Social Security numbers, health insurance information, claims and financial information, 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 technical safeguards, and retrained its staff on email security.
What is known
| People affected | 1,442,997 (as reported to HHS) |
|---|---|
| Disclosed | Dec 16, 2020 |
| Discovered | Jun 19, 2020 |
| Happened | Jul 2, 2020 |
| Attack | Phishing |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: MEDNAX Servicesoag.ca.gov · Official notice | Official notice |
| Washington Attorney General breach notice: MEDNAX Servicesatg.wa.gov · Official notice | Official notice |
| Oregon DOJ breach notice: MEDNAX Servicesjustice.oregon.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): MEDNAX Services (Business Associate, FL)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| California AGresidents of CA | Dec 16, 2020 | |
| Washington AGresidents of WA | Dec 16, 2020 | 29,861 |
| Oregon DOJresidents of OR | Dec 16, 2020 | 2,411 |
| HHS archivetotal | Dec 16, 2020 | 1,442,997 |
| California AGresidents of CA | Dec 23, 2020 |
History of this record
- 2026-09-25 · data_types: [] to ["names","health"] · backfill source
- 2026-09-25 · records_basis: empty to hhs · backfill source
- 2026-09-25 · records: empty to 1442997 · backfill source
- 2026-09-25 · summary: empty to The covered entity (CE), Pediatrix Medical Group, formerly known as MEDNAX Services, reported that multiple employees were victims of an email phishing attack affecting the protected health information (PHI) of 1,442,997 individuals. The PH · backfill source
- 2026-09-25 · sector: other to health · backfill source
- 2026-09-25 · attack: unknown to phishing · backfill source
- 2026-09-25 · discovered: empty to 2020-06-19 · backfill source
- 2026-09-25 · disclosed: 2020-12-23 to 2020-12-16 · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.