Breach filing
ArchivedAdventHealth Shawnee Mission: 28,766 individuals, Oct 2020.
AdventHealth Shawnee Mission reported a breach of unsecured protected health information to the HHS Office for Civil Rights on 26 October 2020. The filing records the organisation as a healthcare provider in Kansas and lists 28,766 individuals affected, which makes it the 18th largest of the 80 Kansas filings on the register and the 172nd largest of the 663 filings submitted nationally in 2020. Among the 3 Kansas filings made in 2020 it ranks 1st.
Individuals affected
28,766
As reported to HHS
Modelled cost (IBM 2025)
$4.60M
Method shown, not disclosed
Rank in KS
18th
of 80 Kansas filings
Rank in 2020
172nd
of 663 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
- 28,766
- Breach submission date
- 26 October 2020
- Submission year
- 2020
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- State
- Kansas (KS)
- Portal status
- listed in the HHS OCR breach portal archive
- Rank in Kansas by size
- 18th of 80
- Rank in 2020 nationally
- 172nd of 663
- Kansas median filing
- 7,757 individuals
- Register id (derived)
- KS-20201026-adventhealth-shawnee-mission
Section F.2 / In context
Where this filing sits in Kansas and in 2020
OCR classifies the incident as a hacking or IT incident, with the breached information held in a network server. Hacking/IT Incident is the type recorded on 59 of the 80 Kansas filings (74%) and on 69% of all filings submitted in 2020. Network Server is the most common location in the state, appearing on 55% of Kansas filings.
A business associate is recorded as present on the filing, as it is on 21% of Kansas filings. At 28,766 individuals the breach is 3.7 times the Kansas median filing of 7,757 and 7.2 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.
Kansas's breach notification statute (K.S.A. 50-7a01 et seq.) requires notice to affected residents in the most expedient time possible and without unreasonable delay. Its attorney general threshold: no general AG requirement (reporting agencies at more than 1,000 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 28,766 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 $4.60M; the 2026 edition's $192 gives $5.52M. Both are modelled estimates with the method shown, not costs disclosed by AdventHealth Shawnee Mission. For scale, IBM's 2026 average cost of a healthcare breach is $6.64M, so this filing models at 0.8 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), AdventHealth Shawnee Mission, reported that its business associate (BA) experienced a ransomware attack affecting the electronic protected health information (ePHI) of 28,766 individuals. The ePHI involved included names, addresses, dates of birth, and treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice.
Section F.5 / Modelled cost
28,766 individuals through IBM's per-record figures
Modelled cost / method shown, not a disclosed cost
ModelledIBM 2025 customer PII, $160 per record
$4.60M
28,766 x $160
IBM 2026 customer PII, $192 per record
$5.52M
28,766 x $192
Method: individuals affected, as reported by AdventHealth Shawnee Mission 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
Kansas statute and the HIPAA rule
State notification statute
Kansas: K.S.A. 50-7a01 et seq.
- Notice to individuals
- In the most expedient time possible and without unreasonable delay
- Attorney general threshold
- No general AG requirement (reporting agencies at more than 1,000 residents)
- Private right of action
- No: Only the Kansas Attorney General may enforce
- Penalty
- Deceptive trade practice; up to $10,000 per violation (up to $20,000 for willful order violations)
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
Kansas filings closest in size
Neighbours by size rank among Kansas filings in 2020, topped up from other years where 2020 has too few. Filings of 10,000 or more link to their own page.
| Covered entity | Type | Individuals | Submitted | Breach type | Location | BA |
|---|---|---|---|---|---|---|
| Family Health Care, Inc | Healthcare Provider | 33,619 | 24 May 2022 | |||
| Benefit Management, LLC | Business Associate | 29,119 | 27 Jan 2023 | |||
| Hunter Health ClinicOpen | Healthcare Provider | 28,431 | 15 May 2025 | |||
| Central Kansas Orthopedic Group, LLC | Healthcare Provider | 17,214 | 28 Jan 2020 | |||
| Saint Francis Ministries | Healthcare Provider | 3,680 | 10 Apr 2020 |
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 3608.
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.