Breach intelligence · MO
18 reported healthcare data breach incidents affecting 4.3M individuals. Sourced from 7 federal and community intelligence feeds. Updated nightly.
18
Incidents reported
4.3M
Individuals affected
Hacking
Top attack vector
Stable
6-month trend
Recent incidents
| Date | Entity | Individuals | Source | Severity |
|---|---|---|---|---|
| Mar 3, 2026 | TriZetto Provider Solutions | 3,433,965 | Hhs Breach | — |
| Feb 11, 2026 | EyeCare Partners, LLC, including The Ophthalmology Group, Ophthalmology Consultants, and Ophthalmology Associates. | 17,110 | Hhs Breach | — |
| Jan 30, 2026 | Central Ozarks Medical Center | 11,818 | Hhs Breach | — |
| Jan 22, 2026 | Advocates for a Healthy Community dba Jordan Valley Community Health Center | 8,842 | Hhs Breach | — |
| Dec 30, 2025 | Greater St. Louis Oral & Maxillofacial Surgery PC | 501 | Hhs Breach | — |
| Dec 25, 2025 | Rockhill Women’s Care | 70,129 | Hhs Breach | — |
| Dec 25, 2025 | City of St. Joseph, MO Health Department | 11,538 | Hhs Breach | — |
| Dec 24, 2025 | Fidelis Care New York | 1,680 | Hhs Breach | — |
| Dec 24, 2025 | Rockhill Women's Care | 70,129 | Hhs Breach | — |
| Dec 24, 2025 | Heartland Regional Medical Center d/b/a Mosaic Life Care | 145,269 | Hhs Breach | — |
| Dec 24, 2025 | Esse Health | 23,671 | Hhs Breach | — |
| Dec 24, 2025 | Iron County Medical Center | 10,239 | Hhs Breach | — |
| Dec 24, 2025 | Cerner Corporation | 501 | Hhs Breach | — |
| Dec 24, 2025 | Missouri Department of Conservation | 10,260 | Hhs Breach | — |
| Dec 24, 2025 | Ascension Health | 437,329 | Hhs Breach | — |
| Dec 24, 2025 | Scharnhorst Ast Kennard Griffin PC | 639 | Hhs Breach | — |
| Dec 24, 2025 | Parc Provence Memory Care Facility | 13,954 | Hhs Breach | — |
| Dec 24, 2025 | The Gatesworth Senior Living St. Louis | 31,124 | Hhs Breach | — |
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Most affected entities
#1
1
incidents
3.4M
individuals
#2
1
incidents
17K
individuals
#3
1
incidents
12K
individuals
#4
1
incidents
9K
individuals
#5
1
incidents
501
individuals
Attack vectors
Breakdown of breach types reported across 18 incidents in Missouri. Understanding which vectors dominate helps practices prioritize their security controls.
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FAQ
Patient Protect tracks 18 reported healthcare data breach incidents in Missouri, affecting approximately 4.3M individuals. Data is sourced from HHS OCR, State Attorney General offices, FTC enforcement, and community intelligence — updated nightly.
The most frequently reported breach vector in Missouri is Hacking/IT Incident, accounting for 17 of 18 incidents. Unauthorized Access/Disclosure is the second most common with 1 incidents.
Independent healthcare practices are the fastest-growing target for healthcare cyberattacks nationwide — attacks on small providers have increased 6x since 2021. Missouri practices face the same threat landscape with fewer resources to defend against it. Patient Protect provides breach prevention specifically for independent practices starting at $39/month.
Explore the full breach intelligence dashboard with 12 analytical views, risk forecasting, and attack chain visualization.
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