Harvard Pilgrim Health Care

Harvard Pilgrim Health Care notified California AG on Aug 25, 2023 of a data breach, which occurred on Apr 17, 2023. Data exposed: Social Security number, Medical / health information, Health insurance, Date of birth, Phone number, Postal address, Name.

Organization: Harvard Pilgrim Health Care
Source: California AG · source record
Date reported: Aug 25, 2023
Date(s) of breach: Tuesday, March 28, 2023Monday, April 17, 2023
Residents affected: Not published by this source
Data exposed: Social Security number Medical / health information Health insurance Date of birth Phone number Postal address Name
Notice letter: Sample notice (PDF)
First seen by BreachTally: 2026-10-30 15:57 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

Other filings by Harvard Pilgrim Health Care

Organization	Source	State	Reported	Residents affected	Data exposed
Harvard Pilgrim Health Care, Inc.	HHS OCR	US	Jul 21, 2026	1,168	Medical / health information
Harvard Pilgrim Health Care	California AG	CA	Jan 21, 2025	Not published	Medical / health informationHealth insuranceDate of birthPostal address+1
Harvard Pilgrim Health Care	California AG	CA	Oct 3, 2024	Not published	Medical / health informationName
Harvard Pilgrim Health Care	California AG	CA	Mar 27, 2024	Not published	In the letter (PDF)
Harvard Pilgrim Health Care	California AG	CA	Feb 15, 2024	Not published	In the letter (PDF)
Harvard Pilgrim Health Care	California AG	CA	Jul 20, 2023	Not published	Social Security numberMedical / health informationHealth insuranceDate of birth+3
Harvard Pilgrim Health Care	Delaware DOJ	DE	Jun 15, 2023	624	Social Security numberMedical / health informationHealth insuranceDate of birth+3

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.