MO · HHS OCR reports
HIPAA breaches in Missouri
HIPAA breaches affecting 500 or more individuals reported to HHS OCR by covered entities listed in Missouri.
Reports
167
Individuals affected
17,582,532
Under investigation
19
Top type: Hacking/IT Incident
State breach notification law
Mo. Rev. Stat. § 407.1500 (Merchandising Practices - Security Breach Notification) (amended
Timing: Without unreasonable delay Missouri requires businesses and persons to notify affected consumers
Read the Missouri data breach notification law summaryAll reports, newest first
Page 1 of 4. 167 reports.
| Covered entity | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|
| Leggett & Platt, Incorporated Employee Benefit Plan | Health Plan | 61,702 | Sep 15, 2026 | Hacking/IT Incident | Archive (closed) |
| Life Unlimited, Inc. | Healthcare Provider | 1,530 | Sep 4, 2026 | Hacking/IT Incident | Under investigation |
| Kim Knobbe | Business Associate | 11,927 | Aug 27, 2026 | Unauthorized Access/Disclosure | Under investigation |
| Columbia Orthopaedic Group | Healthcare Provider | 500 | Jun 18, 2026 | Hacking/IT Incident | Under investigation |
| Lutheran Home for the Aged | Healthcare Provider | 2,311 | Jun 8, 2026 | Hacking/IT Incident | Under investigation |
| MVP VIP Holdco dba Heart of America Eye Care | Healthcare Provider | 500 | Jun 5, 2026 | Hacking/IT Incident | Under investigation |
| C2N Diagnostics, LLC | Healthcare Provider | 2,027 | Apr 27, 2026 | Hacking/IT Incident | Under investigation |
| TriZetto Provider Solutions | Business Associate | 3,433,965 | Feb 6, 2026 | Hacking/IT Incident | Under investigation |
| EyeCare Partners, LLC, including The Ophthalmology Group, Ophthalmology Consultants, and Ophthalmology Associates. | Healthcare Provider | 17,622 | Feb 3, 2026 | Hacking/IT Incident | Archive (closed) |
| Central Ozarks Medical Center | Healthcare Provider | 11,818 | Jan 9, 2026 | Hacking/IT Incident | Under investigation |
| Advocates for a Healthy Community dba Jordan Valley Community Health Center | Healthcare Provider | 8,842 | Dec 22, 2025 | Hacking/IT Incident | Archive (closed) |
| Greater St. Louis Oral & Maxillofacial Surgery PC | Healthcare Provider | 501 | Dec 4, 2025 | Hacking/IT Incident | Under investigation |
| Fidelis Care New York | Health Plan | 1,680 | Oct 31, 2025 | Unauthorized Access/Disclosure | Archive (closed) |
| CareSTL Health, Inc. | Healthcare Provider | 501 | Oct 3, 2025 | Hacking/IT Incident | Archive (closed) |
| Rockhill Women’s Care | Healthcare Provider | 70,129 | Sep 25, 2025 | Hacking/IT Incident | Under investigation |
| City of St. Joseph, MO Health Department | Healthcare Provider | 11,538 | Sep 22, 2025 | Hacking/IT Incident | Under investigation |
| Heartland Regional Medical Center d/b/a Mosaic Life Care | Healthcare Provider | 145,269 | Jun 27, 2025 | Hacking/IT Incident | Archive (closed) |
| Esse Health | Healthcare Provider | 23,671 | Jun 20, 2025 | Hacking/IT Incident | Under investigation |
| Iron County Medical Center | Healthcare Provider | 10,239 | Jun 18, 2025 | Hacking/IT Incident | Archive (closed) |
| Cerner Corporation | Business Associate | 501 | Jun 17, 2025 | Hacking/IT Incident | Archive (closed) |
| Missouri Department of Conservation | Health Plan | 10,260 | May 30, 2025 | Hacking/IT Incident | Archive (closed) |
| Ascension Health | Healthcare Provider | 437,329 | Apr 28, 2025 | Hacking/IT Incident | Under investigation |
| Scharnhorst Ast Kennard Griffin PC | Business Associate | 639 | Apr 14, 2025 | Hacking/IT Incident | Archive (closed) |
| The Gatesworth Senior Living St. Louis | Healthcare Provider | 31,124 | Apr 11, 2025 | Hacking/IT Incident | Under investigation |
| Parc Provence Memory Care Facility | Healthcare Provider | 13,954 | Apr 11, 2025 | Hacking/IT Incident | Under investigation |
| St. Charles County Ambulance District | Healthcare Provider | 1,265 | Mar 7, 2025 | Hacking/IT Incident | Archive (closed) |
| CEI Vision Partners, LLC | Business Associate | 10,841 | Feb 28, 2025 | Hacking/IT Incident | Under investigation |
| HealthRev Partners, LLC | Business Associate | 1,446 | Feb 20, 2025 | Hacking/IT Incident | Archive (closed) |
| Cornerstones of Care | Healthcare Provider | 2,771 | Feb 14, 2025 | Hacking/IT Incident | Under investigation |
| St. Andrew’s Resources for Seniors System | Healthcare Provider | 4,434 | Feb 7, 2025 | Hacking/IT Incident | Archive (closed) |
| Building Service Employees Insurance Health and Welfare Plan | Health Plan | 980 | Jan 9, 2025 | Theft | Archive (closed) |
| Lifetime Psychiatry, LLC | Healthcare Provider | 16,926 | Dec 30, 2024 | Hacking/IT Incident | Archive (closed) |
| Kansas City Hospice, Inc | Healthcare Provider | 3,621 | Dec 20, 2024 | Hacking/IT Incident | Archive (closed) |
| East Central Missouri Behavioral Health Services, Inc. | Healthcare Provider | 20,000 | Nov 21, 2024 | Hacking/IT Incident | Under investigation |
| Missouri Department of Mental Health | Healthcare Provider | 537 | Nov 8, 2024 | Unauthorized Access/Disclosure | Archive (closed) |
| Thompson Coburn LLP | Business Associate | 305,088 | Nov 4, 2024 | Hacking/IT Incident | Archive (closed) |
| Embody Performance & Recovery | Healthcare Provider | 1,100 | Nov 4, 2024 | Unauthorized Access/Disclosure | Archive (closed) |
| Clay Platte Family Medicine | Healthcare Provider | 53,916 | Oct 18, 2024 | Hacking/IT Incident | Under investigation |
| Pemiscot Memorial Health System | Healthcare Provider | 33,279 | Aug 9, 2024 | Unauthorized Access/Disclosure | Archive (closed) |
| Ascension Health | Healthcare Provider | 5,466,931 | Jul 3, 2024 | Hacking/IT Incident | Archive (closed) |
| Carroll County Memorial Hospital | Healthcare Provider | 7,021 | Jun 18, 2024 | Hacking/IT Incident | Archive (closed) |
| Liberty Hospital | Healthcare Provider | 264,541 | Feb 8, 2024 | Hacking/IT Incident | Archive (closed) |
| North Kansas City Hospital | Healthcare Provider | 502,438 | Jan 3, 2024 | Hacking/IT Incident | Archive (closed) |
| Midwest Long Term Care Services DBA Senior Scripts | Healthcare Provider | 10,566 | Jan 2, 2024 | Hacking/IT Incident | Archive (closed) |
| Leggett & Platt Incorporated Employee Benefit Fund | Health Plan | 1,200 | Dec 4, 2023 | Hacking/IT Incident | Archive (closed) |
| Navvis & Company, LLC | Business Associate | 2,824,726 | Sep 22, 2023 | Hacking/IT Incident | Archive (closed) |
| Advocates for a Healthy Community Inc dba Jordan Valley Community Health Center | Healthcare Provider | 2,502 | Sep 15, 2023 | Unauthorized Access/Disclosure | Archive (closed) |
| Missouri Department of Social Services | Health Plan | 739,884 | Aug 7, 2023 | Hacking/IT Incident | Archive (closed) |
| Plumbers Local 8 Health & Welfare Fund | Health Plan | 4,790 | Aug 2, 2023 | Hacking/IT Incident | Archive (closed) |
| University of Missouri Health Care | Healthcare Provider | 736 | May 17, 2023 | Unauthorized Access/Disclosure | Archive (closed) |
Source: HHS OCR Breach Portal, OCR export October 2026.