St. Mary’s Healthcare System for Children Data Breach Investigation

Turke & Strauss LLP, a leading data breach law firm, is investigating St. Mary’s Healthcare System for Children, Inc. (“St. Mary’s”) regarding its recent data breach. The St. Mary’s data breach involved personal identifiable information belonging to over 5,000 individuals.


St. Mary’s is a pediatric children’s hospital in New York. Founded in 1870, St. Mary’s is a total-healing environment providing a continuum of programs and services and the highest level of support to children with medically complex conditions.2 To this end, St. Mary’s offers specialized in-patient care, day healthcare, rehabilitation, home care, and education services to children and young adults following acute care hospitalization due to premature birth, illness, injury, or other critical health conditions.2 Headquartered in Bayside, New York, St. Mary’s has an additional location in New Hyde Park, New York, and employs over 1,000 individuals.


Recently, St. Mary’s discovered that it had experienced a data breach in which personal identifiable information in its systems may have been accessed and acquired. Through its investigation, St. Mary’s determined that an unauthorized party may have accessed this sensitive information on November 9, 2023. On March 20, 2024, St. Mary’s began notifying individuals whose information may have been impacted. The type of information potentially exposed includes:

  • Name
  • Social Security number

If you received a breach notification letter from St. Mary's Healthcare System for Children, Inc.:

We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at (608) 237-1775 or

If you were impacted by the St. Mary’s data breach, you may consider taking the following steps to protect your personal information.

  1. Carefully review the breach notice and retain a copy;
  2. Enroll in any free credit monitoring services provided by St. Mary’s Healthcare System for Children, Inc.:
  3. Change passwords and security questions for online accounts;
  4. Regularly review account statements for signs of fraud or unauthorized activity;
  5. Monitor credit reports for signs of identity theft; and
  6. Contact a credit bureau(s) to request a temporary fraud alert.

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