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DHCS Reports Security Incident Involving ADHC Mailing

The California Department of Health Care Services (DHCS) reported on February 8, 2010, that a mailing sent to 49,352 Adult Day Health Care (ADHC) services inadvertently included their Social Security Numbers (SSN). 

The incident occurred on February 1, when DHCS sent a notice to ADHC beneficiaries, entitled, “Notice of Change in Medical Necessity and Eligibility Criteria for Authorization of ADHC Services.” In preparing and formatting a mailing list, beneficiaries’ SSNs were mistakenly included. The SSNs did not have spaces or dashes so they may have appeared to be a random nine-digit number to people other than the recipients. On February 4, DHCS was notified of the error and took swift action to notify beneficiaries.  In addition, DHCS further strengthened its procedures to protect the privacy of beneficiaries.

DHCS took immediate action to notify affected beneficiaries:  View Copy of Notification


Frequently Asked Questions


Office of Privacy Protection Recommendations:

  Beneficiaries were advised to log on to the California Office of Privacy Protection Web site at: for more information about identity theft.


Last modified on: 3/29/2012 11:08 AM