| Organization | Method/Breach | Date | Number of records | Location of breached information |
| Anthem | Hacking/IT incident | March 2015 | 78,800,000 | Network server |
| Premera Blue Cross | Hacking/IT incident | March 2015 | 11,000,000 | Network server |
| Excellus Health Plan | Hacking/IT incident | Septemberbreak/>2015 | 10,000,000 | Network Server |
| Science Applications International Corpora tion (SAIC) | Loss | November 2011 | 4,900,000 | Other |
| University of California, Los Angeles Health | Hacking/IT incident | July 2015 | 4,500,000 | Network Server |
| Community Health Systems Professional Services Corporation | Theft | August 2014 | 4,500,000 | Network Server |
| Advocate Medical Group | Theft | August 2013 | 4,029,530 | Desktop computer |
| Medical Informatics Engineering | Hacking/IT incident | July 2015 | 3,900,000 | Electronic Medical Record Network Server |
| Xerox State Healthcare | Unauthorized access/disclosure | September 2014 | 2,000,000 | Desktop computer or other device |
| IBM | Unknown | April 2011 | 1,900,000 | Other |