Breach filing
ArchivedCheyenne Radiology Group & MRI, P.C.: 12,222 individuals, Feb 2023.
Cheyenne Radiology Group & MRI, P.C. reported a breach of unsecured protected health information to the HHS Office for Civil Rights on 9 February 2023. The filing records the organisation as a healthcare provider in Wyoming and lists 12,222 individuals affected, which makes it the 4th largest of the 19 Wyoming filings on the register and the 318th largest of the 746 filings submitted nationally in 2023. It was the only Wyoming filing in 2023.
Individuals affected
12,222
As reported to HHS
Modelled cost (IBM 2025)
$1.96M
Method shown, not disclosed
Rank in WY
4th
of 19 Wyoming filings
Rank in 2023
318th
of 746 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
- 12,222
- Breach submission date
- 9 February 2023
- Submission year
- 2023
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- State
- Wyoming (WY)
- Portal status
- listed in the HHS OCR breach portal archive
- Rank in Wyoming by size
- 4th of 19
- Rank in 2023 nationally
- 318th of 746
- Wyoming median filing
- 5,615 individuals
- Register id (derived)
- WY-20230209-cheyenne-radiology-group-and-mri-pc
Section F.2 / In context
Where this filing sits in Wyoming and in 2023
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 7 of the 19 Wyoming filings (37%) and on 82% of all filings submitted in 2023. Network Server appears on 37% of Wyoming filings.
No business associate is recorded on the filing; 32% of Wyoming filings do involve one. At 12,222 individuals the breach is 2.2 times the Wyoming median filing of 5,615 and 3.1 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. The archive entry carries no closing summary.
Wyoming's breach notification statute (Wyo. Stat. 40-12-501, 40-12-502) requires notice to affected residents in the most expedient time possible and without unreasonable delay. Its attorney general threshold: no AG notification requirement. 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 12,222 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 $1.96M; the 2026 edition's $192 gives $2.35M. Both are modelled estimates with the method shown, not costs disclosed by Cheyenne Radiology Group & MRI, P.C.. For scale, IBM's 2026 average cost of a healthcare breach is $6.64M, so this filing models at 0.4 times the sector average.
Section F.5 / Modelled cost
12,222 individuals through IBM's per-record figures
Modelled cost / method shown, not a disclosed cost
ModelledIBM 2025 customer PII, $160 per record
$1.96M
12,222 x $160
IBM 2026 customer PII, $192 per record
$2.35M
12,222 x $192
Method: individuals affected, as reported by Cheyenne Radiology Group & MRI, P.C. 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
Wyoming statute and the HIPAA rule
State notification statute
Wyoming: Wyo. Stat. 40-12-501, 40-12-502
- Notice to individuals
- In the most expedient time possible and without unreasonable delay
- Attorney general threshold
- No AG notification requirement
- Private right of action
- No: No PROA; the AG may bring civil action
- Penalty
- AG may seek injunctive relief, compliance orders, and damages; no statutory penalty cap specified
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
Wyoming filings closest in size
Neighbours by size rank among Wyoming filings in 2023, topped up from other years where 2023 has too few. Filings of 10,000 or more link to their own page.
| Covered entity | Type | Individuals | Submitted | Breach type | Location | BA |
|---|---|---|---|---|---|---|
| Wyoming Department of Health | Health Plan | 164,010 | 29 Apr 2021 | |||
| Cheyenne Regional Medical Center | Healthcare Provider | 17,549 | 10 Dec 2019 | |||
| Community Action partnership of Natrona County | Healthcare Provider | 15,000 | 20 Apr 2011 | |||
| Wyoming Department of Health | Health Plan | 11,935 | 19 Dec 2013 | |||
| Wyoming Department of Health | Health Plan | 11,935 | 16 Dec 2013 |
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 1959.
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.