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Lakeside Pediatrics & Adolescent Medicine, PLLC Data Breach (February 2026): What Was Exposed and What To Do

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

According to the notice filed with the Washington State Attorney General on Feb 27, 2026, Lakeside Pediatrics & Adolescent Medicine, PLLC reported a data breach. It was also reported to the U.S. Department of Health and Human Services, Office for Civil Rights. People affected: 34,154 people (official total in the U.S. Department of Health and Human Services, Office for Civil Rights filing, filed Feb 27, 2026).

Key facts

From 2 official filings
Organization
Lakeside Pediatrics & Adolescent Medicine, PLLC
Source: Washington State Attorney General, filed Feb 27, 2026
People affected
34,154
Official total in the U.S. Department of Health and Human Services, Office for Civil Rights filing, filed Feb 27, 2026
Source: U.S. Department of Health and Human Services, Office for Civil Rights, filed Feb 27, 2026
Incident dates
Oct 15, 2024 – Nov 1, 2024
Source: Washington State Attorney General, filed Feb 27, 2026
Discovered Nov 1, 2024
Source: Washington State Attorney General, filed Feb 27, 2026
Notice dates
First filed Feb 27, 2026
Source: Washington State Attorney General, filed Feb 27, 2026
Information exposed
  • Social Security number
  • Medical information
  • Health insurance information
  • Date of birth
  • Name
Sources: Washington AG, Feb 27, 2026; HHS, Feb 27, 2026
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. A credit freeze stops new credit accounts being opened in your name. It is free by law and you can lift it when you need credit: Equifax, Experian and TransUnion.

  2. An IP PIN stops someone else filing a tax return with your Social Security number. Get one from the IRS at irs.gov.

  3. 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.

  4. 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.

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

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

Is the letter real?

The agency published an official copy of the notice. Compare your letter with it:

Letters usually list a phone number for questions. Before calling, check that it matches the number in the official copy linked above.

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. Incident ended (latest date reported) source
  3. Organization discovered the incident source
  4. Reported to Washington AG and HHS source

Sources

  1. Washington State Attorney General Notice filed Feb 27, 2026
    Filed as “Lakeside Pediatrics & Adolescent Medicine, PLLC” · 1,314 Washington residents · Official copy of the letter
    The link opens the Attorney General's list of notices.
  2. U.S. Department of Health and Human Services, Office for Civil Rights Breach report filed Feb 27, 2026
    Filed as “Lakeside Pediatrics & Adolescent Medicine, PLLC” · total 34,154
    The link opens the agency's list; search it for the organization name.

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