Geography
Montana: 36 healthcare breach filings.
Montana entities have reported 36 breaches of 500 or more individuals to HHS since 2011, the 42nd most of the 52 states and territories on the register, covering 1,865,004 individuals (40th by people affected). 1 are still under investigation. Hacking/IT Incident is the breach type on 56% of them, and email the most common location (36%).
Filings
36
42nd of 52 states and territories
Individuals affected
1,865,004
Median filing 6,000
Largest filing
1,062,509
Montana Department of Public Health & Human Services, 2014
Hacking / IT share
56%
5 filings involve a business associate
Direct answer / Montana on the HHS portal
The largest Montana filing is Montana Department of Public Health & Human Services (1,062,509 individuals, submitted 7 July 2014). The busiest year was 2024 with 5 filings. Healthcare Providers account for 86% of the state's filings. 11 filings of 10,000 or more individuals have their own page; the remaining 25 are listed in the table at the foot of this page.
Section MT.1 / Largest filings
Ten largest Montana breaches
| # | Covered entity | Type | Individuals | Submitted | Breach type | Location | BA |
|---|---|---|---|---|---|---|---|
| 1 | Montana Department of Public Health & Human Services | Health Plan | 1,062,509 | 7 Jul 2014 | |||
| 2 | Logan Health Medical Center | Healthcare Provider | 213,543 | 22 Feb 2022 | |||
| 3 | Kalispell Regional Healthcare | Healthcare Provider | 149,661 | 22 Oct 2019 | |||
| 4 | Western Montana Mental Health Center | Healthcare Provider | 86,758 | 14 Nov 2024 | |||
| 5 | Benefis Hospitals Inc | Healthcare Provider | 81,043 | 27 Jul 2021 | |||
| 6 | Planned Parenthood of Montana | Healthcare Provider | 56,917 | 5 Nov 2024 | |||
| 7 | Ortho Montana, PSC | Healthcare Provider | 37,000 | 8 Feb 2011 | |||
| 8 | New West Health Services d/b/a New West Medicare | Health Plan | 28,209 | 15 Jan 2016 | |||
| 9 | Community Hospital of AnacondaOpen | Healthcare Provider | 21,243 | 19 May 2025 | |||
| 10 | Western Health Screening | Business Associate | 15,326 | 14 Apr 2017 |
Section MT.2 / By year
Montana filings by submission year
Each year links to the national year page.
Section MT.3 / Composition
Breach type, location and who filed
Multi-valued fields count once per value.
Type of breach
Location of breached information
Covered entity type
Section MT.4 / Notification law
What Montana law required alongside HIPAA
State notification statute
Montana: Mont. Code Ann. 30-14-1704 et seq.
- Notice to individuals
- Without unreasonable delay
- Attorney general threshold
- All breaches affecting Montana residents (When notice is provided to affected individuals)
- Private right of action
- No: Only the Montana Attorney General may bring enforcement actions
- Penalty
- Unfair or deceptive trade practice; up to $10,000 per violation, plus restitution
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 MT.5 / Filing pages
11 filings of 10,000 or more individuals
Each links to a page with the full filing, its rank in the state and year, OCR's closing summary where the case is archived, peers, and the modelled cost.
| Covered entity | Type | Individuals | Submitted | Breach type | Location | BA |
|---|---|---|---|---|---|---|
| Montana Department of Public Health & Human Services | Health Plan | 1,062,509 | 7 Jul 2014 | |||
| Logan Health Medical Center | Healthcare Provider | 213,543 | 22 Feb 2022 | |||
| Kalispell Regional Healthcare | Healthcare Provider | 149,661 | 22 Oct 2019 | |||
| Western Montana Mental Health Center | Healthcare Provider | 86,758 | 14 Nov 2024 | |||
| Benefis Hospitals Inc | Healthcare Provider | 81,043 | 27 Jul 2021 | |||
| Planned Parenthood of Montana | Healthcare Provider | 56,917 | 5 Nov 2024 | |||
| Ortho Montana, PSC | Healthcare Provider | 37,000 | 8 Feb 2011 | |||
| New West Health Services d/b/a New West Medicare | Health Plan | 28,209 | 15 Jan 2016 | |||
| Community Hospital of AnacondaOpen | Healthcare Provider | 21,243 | 19 May 2025 | |||
| Western Health Screening | Business Associate | 15,326 | 14 Apr 2017 | |||
| Acadia Montana Treatment Center | Healthcare Provider | 14,794 | 17 May 2019 |
Section MT.6 / All other filings
25 filings below 10,000 individuals
Listed in full from the HHS export, largest first. These filings do not have their own page.
| Covered entity | Type | Individuals | Submitted | Breach type | Location | BA |
|---|---|---|---|---|---|---|
| Billings Clinic | Healthcare Provider | 9,417 | 13 Jul 2018 | |||
| Partnership Health Center | Healthcare Provider | 8,331 | 29 Jun 2023 | |||
| Western Montana Clinic PC | Healthcare Provider | 8,255 | 1 Aug 2025 | |||
| Western Montana Clinic | Healthcare Provider | 7,038 | 2 Apr 2015 | |||
| Northern Rockies Orthopaedics | Healthcare Provider | 6,701 | 17 May 2022 | |||
| Urology Associates, Professional Corporation | Healthcare Provider | 6,500 | 24 Jul 2015 | |||
| Rocky Boy Health Center | Healthcare Provider | 6,000 | 21 Feb 2019 | |||
| Lone Peak Physical Therapy, Inc. | Healthcare Provider | 5,809 | 21 Dec 2023 | |||
| Sapphire Community Health | Healthcare Provider | 5,617 | 17 Oct 2025 | |||
| Johnson & Associates, Inc. | Business Associate | 4,600 | 10 Jul 2024 | |||
| EasterSeals-Goodwill of the Northern Rocky Mountains | Healthcare Provider | 3,886 | 16 Sep 2022 | |||
| Sapphire Community Health | Healthcare Provider | 3,751 | 21 Apr 2021 | |||
| Glacier Medical Associates | Healthcare Provider | 3,007 | 7 Jun 2021 | |||
| miCare Health Center | Healthcare Provider | 2,766 | 11 Oct 2024 | |||
| River City Whole Health, Ltd. | Healthcare Provider | 2,714 | 20 Mar 2021 | |||
| RightNow Technologies | Business Associate | 2,700 | 11 Jan 2012 | |||
| Advanced Care Hospital of Montana | Healthcare Provider | 2,331 | 2 Apr 2024 | |||
| Shiloh Medical Clinic | Healthcare Provider | 1,900 | 17 Dec 2013 | |||
| Sidney Health Center | Healthcare Provider | 1,370 | 3 Jan 2025 | |||
| Associated Dermatology & Skin Cancer Clinic of Helena, PC | Healthcare Provider | 1,254 | 28 Jun 2018 | |||
| Bozeman Health Deaconess Hospital | Healthcare Provider | 1,124 | 21 Mar 2016 | |||
| Billings Clinic | Healthcare Provider | 949 | 27 Apr 2018 | |||
| Renew Wellness Center, PLLC | Healthcare Provider | 730 | 23 Mar 2020 | |||
| Karen Kietzman | Healthcare Provider | 708 | 22 Jun 2012 | |||
| Yellowstone Boys and Girls Ranch | Healthcare Provider | 543 | 24 Mar 2014 |
Index / Other states
Every state on the register
98
32
164
92
776
139
144
31
33
463
226
22
29
358
200
98
80
124
66
37
170
241
238
189
55
164
60
55
38
174
57
511
207
19
276
80
120
339
32
41
86
15
196
633
68
15
157
185
47
126
19
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.
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.