BreachCensus

Trinity Health

private companyHealthcareUnited States of America

Trinity Health is a healthcare organisation in Massachusetts. It appears on the HHS OCR breach portal, the Massachusetts Attorney General breach-notification register and the California Attorney General breach-notification register with 4 confirmed incidents (5 filings); the most recent notice was filed on March 13, 2026.

Data as of September 13, 2026.

Sources

Confirmed incident

Filed in MI and MA — Unauthorized Access/Disclosure

The same incident was filed separately with 2 jurisdictions within a few days of each other (MI and MA) — shown here as one incident.

Disclosed
March 13, 2026
Records affected
2,740

Was I affected? →

Reported with a business associate involved (HHS portal)

Timeline

  1. March 13, 2026
    Reported to regulator Regulator

    HHS OCR breach portal listing: Unauthorized Access/Disclosure; Electronic Medical Record

    source
  2. March 13, 2026
    Reported to regulator Regulator

    MA AG breach notification: 51 Massachusetts residents affected

    source

Litigation

  • Possible litigation — multiple candidate dockets found, not yet resolved to a single case.
What a Massachusetts notice means

Governed by M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗

Confirmed incident

US-MA

Disclosed
March 9, 2023

Timeline

  1. March 9, 2023
    Reported to regulator Regulator

    MA AG breach notification: 42,925 Massachusetts residents affected

    source

Litigation

  • Possible litigation — multiple candidate dockets found, not yet resolved to a single case.
Confirmed incident

Filed in CA and MA

The same incident was filed separately with 2 jurisdictions within a few days of each other (CA and MA) — shown here as one incident.

Occurred
January 20, 2021
Disclosed
April 5, 2021

Timeline

  1. April 5, 2021
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  2. April 5, 2021
    Reported to regulator Regulator

    MA AG breach notification: 152 Massachusetts residents affected

    source

Litigation

  • Possible litigation — multiple candidate dockets found, not yet resolved to a single case.
What a California notice means

Governed by Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

Confirmed incident

Filed in MA and CA

The same incident was filed separately with 2 jurisdictions within a few days of each other (MA and CA) — shown here as one incident.

Occurred
May 16, 2020
Disclosed
October 26, 2020

Timeline

  1. October 23, 2020
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  2. October 26, 2020
    Reported to regulator Regulator

    MA AG breach notification: 293 Massachusetts residents affected

    source

Litigation

  • Possible litigation — multiple candidate dockets found, not yet resolved to a single case.
  • Possible litigation — multiple candidate dockets found, not yet resolved to a single case.

Related

Same sector and location

Disclosed around the same time