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BreachRecord

Advocate Health and Hospitals Corporation, d/b/a Advocate Medical Group Data Breach (August 2013): What Was Exposed and What To Do

Last updated Oct 20, 2026 · Based on 2 official filings · See sources

According to the breach report filed with the U.S. Department of Health and Human Services, Office for Civil Rights on Aug 23, 2013, Advocate Health and Hospitals Corporation, d/b/a Advocate Medical Group reported a data breach. It was also reported to the California Attorney General. People affected: 4,029,530 people (official total in the U.S. Department of Health and Human Services, Office for Civil Rights filing, filed Aug 23, 2013).

Key facts

From 2 official filings
Organization
Advocate Health and Hospitals Corporation, d/b/a Advocate Medical Group
Also filed as: Advocate Medical Group
Source: U.S. Department of Health and Human Services, Office for Civil Rights, filed Aug 23, 2013
People affected
4,029,530
Official total in the U.S. Department of Health and Human Services, Office for Civil Rights filing, filed Aug 23, 2013
Source: U.S. Department of Health and Human Services, Office for Civil Rights, filed Aug 23, 2013
Incident dates
Jul 15, 2013
Source: California Attorney General, filed Aug 23, 2013
Notice dates
First filed Aug 23, 2013
Source: U.S. Department of Health and Human Services, Office for Civil Rights, filed Aug 23, 2013
Information exposed
  • Medical information
Source: HHS, Aug 23, 2013
Filed with
Free credit monitoring
No offer is stated in the filings we have. Check your letter.

What to do now

Steps chosen from the information listed in the official filings. Your own letter may list more.

  1. Check the Explanation of Benefits (EOB) statements from your insurer for visits, prescriptions or claims you do not recognize, and contact your insurer about anything unfamiliar.

  2. Scammers often contact people after a breach, pretending to be the organization, a bank or a government agency. Do not give your Social Security number, passwords or codes to anyone who contacts you first.

  3. You can get free credit reports from all three bureaus at AnnualCreditReport.com, the official site.

  4. The Federal Trade Commission's IdentityTheft.gov gives you a personal recovery plan.

Is the letter real?

Letters usually list a phone number for questions. We could not find an official copy of the letter, so check that the organization named in your letter appears in the official filings listed below before you call.

Never give your Social Security number, bank details or passwords to someone who contacts you first.

Timeline

  1. Incident began (earliest date reported) source
  2. Reported to HHS and California AG source

Sources

  1. U.S. Department of Health and Human Services, Office for Civil Rights Breach report filed Aug 23, 2013
    Filed as “Advocate Health and Hospitals Corporation, d/b/a Advocate Medical Group” · total 4,029,530
    The link opens the agency's list; search it for the organization name.
  2. California Attorney General Notice filed Aug 23, 2013
    Filed as “Advocate Medical Group”

Last updated Oct 20, 2026. Our summaries are written in our own words from the official filings above. Spotted an error? Report a correction.