QUEST DIAGNOSTICS INCORPORATED
75 disclosures across 8 jurisdictions · 2021-11-16 → 2026-07-10. Severity score: 72 across 66 incidents (max per incident: crit=4 high=3 med=2 low=1; per-filing sum: 89).
1825-day window · this entity as victim
apparent from filed dates · see trail
of 3 clock verdicts
max per incident · per-filing sum: 89
Sector context · Healthcare
- This entity:
- 66.7% on-time (n=3 clock verdicts)
- Sector cohort:
- 19.2% on-time (n=2,369 clock verdicts)
Cohort: 9,559 filings from 4,206 organisations carrying NAICS 62 on the filing itself, same 1825-day window; merged entities counted once. Both percentages count clock verdicts through the same registry — a filing with no evaluable clock is excluded from both rather than counted as on time.
Compliance timing by regulator
Notice timing computed from the dates recorded in each filing — an indicative estimate from an automated clock, not a legal determination. Click any chip for this entity's source filings.
- HIPAA0 on-time · 0 late · 1 informational · 1
- California1 on-time · 0 late · 1
- Maine1 on-time · 1 review · 0 late · 2
- Massachusetts0 on-time · 0 late · 2 informational · 2
us-il — no notification-clock framework implemented for this jurisdiction
us-in — no notification-clock framework implemented for this jurisdiction
us-mt — no notification-clock framework implemented for this jurisdiction
us-nh — no notification-clock framework implemented for this jurisdiction
Discovery dates behind these clocks: 62 ag web form · 1 letter-grounded · 3 occurrence date. Only a date the notification letter itself states is fully defensible; a date derived from another field makes the verdict indicative.
Regulators holding filings from this entity
Every regulator that has received a visible filing naming this entity, all time — filings first.
- Illinois State AG (70)
- Massachusetts State AG (26)
- New Hampshire State AG (4)
- California State AG (3)
- HHS OCR (2)
- Indiana State AG (2)
- Maine State AG (2)
- Montana State AG (2)
- Oregon State AG (1)
SEC-registered (CIK 0001022079). SEC cyber filings on record in this corpus: none. Materiality under Item 1.05 is the registrant's own determination; the absence of a filing is a fact about this corpus, not a finding about any obligation.
Breach History (5-Year Lookback)
Historical incident recurrence, cumulative exposure, and per-jurisdiction compliance record
within lookback window
late notice filings
median days between incidents
Per-jurisdiction compliance record
| Jurisdiction | On-time | Late | Rate |
|---|---|---|---|
| us-ca | 1 | 0 | 100% |
| us-ma | 0 | 0 | — |
| us-me | 1 | 1 | 50% |
| us-nj | 0 | 0 | — |
Cumulative data type exposure
Disclosure timeline
Most-recent 100 filings. Click a row to open the disclosure detail.
| Filed | Source | Jurisdiction | Severity | Affected | Clocks missed |
|---|---|---|---|---|---|
| 2026-07-10 | state_ag | us-ma | Medium | 1state | |
| 2026-05-13 | state_ag | us-ma | Medium | 1state | |
| 2024-10-25 | ocr | us-nj | Medium | 1.1K | |
| 2024-10-25 | state_ag | us-nh | Medium | — | |
| 2024-10-25 | state_ag | us-in | Medium | 1.1K | |
| 2024-10-25 | state_ag | us-me | Medium | 1.1K | ME AG >30d· discovery date: ag web form |
| 2024-10-25 | state_ag | us-ma | Low | 24state | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-03-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2024-02-01 | state_ag | us-il | Low | — | |
| 2023-04-05 | state_ag | us-ma | Medium | 4state | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2023-01-01 | state_ag | us-il | Low | — | |
| 2022-01-01 | state_ag | us-il | Low | — | |
| 2022-01-01 | state_ag | us-il | Low | — | |
| 2022-01-01 | state_ag | us-il | Low | — | |
| 2022-01-01 | state_ag | us-il | Low | — | |
| 2022-01-01 | state_ag | us-il | Low | — | |
| 2022-01-01 | state_ag | us-il | Low | — | |
| 2021-11-22 | state_ag | us-nh | Medium | 12state | |
| 2021-11-16 | state_ag | us-mt | Medium | 6state | |
| 2021-11-16 | state_ag | us-ca | Medium | — | |
| 2021-11-16 | state_ag | us-me | High | 5.3K | |
| 2021-11-16 | state_ag | us-in | Medium | 5.3K | |
| 2021-11-16 | state_ag | us-ma | Medium | 156state |