NORTHWESTERN MEMORIAL HEALTHCARE
ent_019e0cbe0d4ea304586680158c919707
Disclosures
25+
State AG · 1 jurisdiction
Multi-filing incidents
—
no multi-filing incident in sample
Max affected reported
—
no filed count in sample
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- NORTHWESTERN MEMORIAL HEALTHCARE
- Normalized
- northwestern memorial healthcare— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- 549300SYNDSEG3SY2U05
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (newest 25)newest first
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-821). The register records the breach as discovered on July 3, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-896). The register records the breach as discovered on April 15, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-871). The register records the breach as discovered on September 24, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-908). The register records the breach as discovered on April 25, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-915). The register records the breach as discovered on December 23, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-868). The register records the breach as discovered on August 6, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-910). The register records the breach as discovered on December 31, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-865). The register records the breach as discovered on September 19, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-839). The register records the breach as discovered on April 21, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-920). The register records the breach as discovered on July 24, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-912). The register records the breach as discovered on November 20, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-825). The register records the breach as discovered on March 3, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-875). The register records the breach as discovered on October 23, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-829). The register records the breach as discovered on October 13, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-841). The register records the breach as discovered on February 4, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-857). The register records the breach as discovered on April 1, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-928). The register records the breach as discovered on January 25, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-880). The register records the breach as discovered on September 10, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-876). The register records the breach as discovered on December 17, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-823). The register records the breach as discovered on September 10, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-848). The register records the breach as discovered on March 17, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-939). The register records the breach as discovered on April 8, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-824). The register records the breach as discovered on October 1, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-872). The register records the breach as discovered on July 11, 2025. Personal information types reported: medical information, ssn. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- Illinois State AGas victim2026-02-01
NORTHWESTERN MEMORIAL HEALTHCARE filed a data-breach notice with the Illinois Attorney General in February 2026 (case 26-02-938). The register records the breach as discovered on April 21, 2025. Personal information types reported: medical information. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
Subsidiary disclosures (3)filed by group companies
◈ These filings were made by or about subsidiaries of NORTHWESTERN MEMORIAL HEALTHCARE — not by NORTHWESTERN MEMORIAL HEALTHCARE itself. Corporate relationships are mapped from GLEIF relationship records and SEC Exhibit 21 filings.
- Illinois State AGvia NORTHWESTERN MEMORIAL HOSPITAL2023-01-01
NORTHWESTERN MEDICINE filed a data-breach notice with the Illinois Attorney General during 2023 (case 23-090). The register records the breach as discovered on May 23, 2017. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.
- ILLINOISHHS OCRvia NORTHWESTERN MEMORIAL HOSPITAL2020-12-30
Northwestern Memorial Hospital (IL) reported to HHS on 2020-12-30 an Unauthorized Access/Disclosure affecting 682 individuals. A workforce member impermissibly accessed ePHI stored in Electronic Medical Records, including names, dates of birth, addresses, medications prescribed, and additional clinical/treatment information. The CE notified HHS, affected individuals, the media, and state and federal regulators. Post-breach, the responsible workforce member was sanctioned and staff were retrained.
- ILLINOISHHS OCRvia NORTHWESTERN MEMORIAL HOSPITAL2012-07-27
Northwestern Memorial Hospital reported to HHS on 2012-07-27 a Theft affecting 4211 individuals. Breached information located on Laptop, Other Portable Electronic Device.