Breach filing
ArchivedMedical Oncology Hematology Consultants,PA: 19,203 individuals, Aug 2017.
Medical Oncology Hematology Consultants,PA reported a breach of unsecured protected health information to the HHS Office for Civil Rights on 29 August 2017. The filing records the organisation as a healthcare provider in Delaware and lists 19,203 individuals affected, which makes it the 13th largest of the 31 Delaware filings on the register and the 43rd largest of the 358 filings submitted nationally in 2017. It was the only Delaware filing in 2017.
Individuals affected
19,203
As reported to HHS
Modelled cost (IBM 2025)
$3.07M
Method shown, not disclosed
Rank in DE
13th
of 31 Delaware filings
Rank in 2017
43rd
of 358 filings nationally
Section F.1 / The filing
As posted by HHS OCR
Every value below is the portal's own field for this filing, plus its rank within the register.
- Covered entity type
- Healthcare Provider
- Individuals affected
- 19,203
- Breach submission date
- 29 August 2017
- Submission year
- 2017
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Desktop Computer, Network Server
- Business associate present
- No
- State
- Delaware (DE)
- Portal status
- listed in the HHS OCR breach portal archive
- Rank in Delaware by size
- 13th of 31
- Rank in 2017 nationally
- 43rd of 358
- Delaware median filing
- 14,095 individuals
- Register id (derived)
- DE-20170829-medical-oncology-hematology-consultants
Section F.2 / In context
Where this filing sits in Delaware and in 2017
OCR classifies the incident as a hacking or IT incident, with the breached information held in a desktop computer and a network server. Hacking/IT Incident is the type recorded on 22 of the 31 Delaware filings (71%) and on 42% of all filings submitted in 2017. Desktop Computer appears on 6% of Delaware filings.
No business associate is recorded on the filing; 39% of Delaware filings do involve one. At 19,203 individuals the breach is 1.4 times the Delaware median filing of 14,095 and 4.8 times the national median of 4,000 across all 7,884 filings. It sits in the 10,000 to 99,999 band, which holds 1,938 filings.
As of 28 August 2026 the case is listed in the HHS OCR breach portal archive. OCR's closing summary of the case is reproduced in full below.
Delaware's breach notification statute (Del. Code tit. 6, Ch. 12B) requires notice to affected residents without unreasonable delay, no later than 60 days after determining a breach occurred. Its attorney general threshold: 500 or more Delaware residents. The HIPAA Breach Notification Rule ran alongside it: notice to affected individuals and to HHS without unreasonable delay and no later than 60 days after discovery, which is the clock that put this filing on the portal.
Multiplying 19,203 individuals by IBM's $160 customer-PII cost per record (Cost of a Data Breach 2025, the figure the site's calculator uses) gives a modelled $3.07M; the 2026 edition's $192 gives $3.69M. Both are modelled estimates with the method shown, not costs disclosed by Medical Oncology Hematology Consultants,PA. For scale, IBM's 2026 average cost of a healthcare breach is $6.64M, so this filing models at 0.6 times the sector average.
Section F.3 / OCR closing summary
The portal's archived description, in full
Written by the Office for Civil Rights when the case was closed and reproduced verbatim from the HHS export.
The covered entity (CE) reported that on June 17, 2017, it was the target of a ransomware attack, affecting electronic files for 19,203 individuals on the CE's computer server and desktop computer workstations. The affected files contained electronic protected health information (ePHI), including demographic and clinical information. The CE worked with third party experts to investigate the ransomware attack and to recover affected data. The CE is not aware of any improper use, disclosure, acquisition, access, or compromise of e-PHI during the ransomware attack. On the day of the attack, the CE's records were saved successfully in a daily backup and the CE was able to recover exact copies of all affected ePHI from those systems. The CE's forensic expert recommended preventative measures, conducted an email phishing test, provided security training to employees, installed an umbrella web filtering system and implemented a two-factor login authentication system. The CE provided breach notification to HHS, affected individuals, and the media. OCR obtained assurances that the CE implemented the corrective actions listed.
Section F.5 / Modelled cost
19,203 individuals through IBM's per-record figures
Modelled cost / method shown, not a disclosed cost
ModelledIBM 2025 customer PII, $160 per record
$3.07M
19,203 x $160
IBM 2026 customer PII, $192 per record
$3.69M
19,203 x $192
Method: individuals affected, as reported by Medical Oncology Hematology Consultants,PA to HHS, multiplied by IBM's customer-PII cost per record (Cost of a Data Breach 2025 Figure 6 and the 2026 edition). No cost has been disclosed by the entity for this filing; the figure is a planning estimate, not a fact about the breach. IBM's per-record figures come from mid-volume breaches and IBM cautions against applying them to breaches involving millions of records; the site's per-record page explains where the multiplication holds and where it breaks down.
Context: IBM's average cost of a healthcare breach is $6.64M in the 2026 report ($7.42M in 2025); the global average across all sectors was $4.44M in 2025.
Cost per record: method and limits / Healthcare breach cost, IBM 2026
Section F.6 / Notification clock
Delaware statute and the HIPAA rule
State notification statute
Delaware: Del. Code tit. 6, Ch. 12B
- Notice to individuals
- Without unreasonable delay, no later than 60 days after determining a breach occurred
- Attorney general threshold
- 500 or more Delaware residents (No later than when individual notices are sent)
- Private right of action
- No: Statute preserves existing common-law and other statutory rights
- Penalty
- Enforced by the AG Consumer Protection Division; may recover direct economic damages
The HIPAA Breach Notification Rule runs alongside the state statute: notice to affected individuals and to HHS without unreasonable delay and no later than 60 days after discovery.
Section F.7 / Peer filings
Delaware filings closest in size
Neighbours by size rank among Delaware filings in 2017, topped up from other years where 2017 has too few. Filings of 10,000 or more link to their own page.
| Covered entity | Type | Individuals | Submitted | Breach type | Location | BA |
|---|---|---|---|---|---|---|
| La Red Health Center | Healthcare Provider | 39,759 | 20 Oct 2023 | |||
| Brandywine Pediatrics, P.A. | Healthcare Provider | 26,873 | 23 Dec 2016 | |||
| Christiana Spine Center, PA | Healthcare Provider | 20,870 | 9 Jun 2022 | |||
| Bayhealth Medical Center, Inc. | Healthcare Provider | 17,481 | 30 Jun 2022 | |||
| Easterseals Delaware & Maryland's Eastern Shore | Healthcare Provider | 15,208 | 30 Aug 2021 |
Index / Companion schedules
13 HHS breach register
→Hub: every filing, by state, year and entity.
04 Biggest breaches
→Mega-breaches with primary-source cost figures.
Industry / Healthcare
→IBM 2026: $6.64M average, 13 years at #1.
Regulation / HIPAA penalties
→OCR enforcement tiers and the 60-day rule.
11 50-state laws
→Deadline, AG threshold and penalties per state.
Cost / Per record
→Where the per-record model is reliable.
Provenance
Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal (breaches affecting 500 or more individuals), retrieved 2026-08-28. Public domain. Individuals affected and dates as reported by the covered entity.
Portal: ocrportal.hhs.gov breach report. Statutory basis: HITECH Act section 13402(e)(4): the Secretary must post a list of breaches of unsecured protected health information affecting 500 or more individuals. Breaches affecting fewer than 500 individuals are reported to OCR annually and are not posted, so they are not on this register. Status wording follows the portal's two tabs ("Cases Currently Under Investigation" and "Archive") as of 28 August 2026; a filing moves to the archive when OCR closes the case. Modelled costs on this site are a method applied to the reported count, using IBM Cost of a Data Breach per-record figures, and are never a cost disclosed by the entity. This row: hhs-breach-archive__2026-08-28.csv, export row 5126.
Corrections: if you represent a listed entity and the portal row has been amended, email [email protected] with the portal entry and we will re-pull the export.