New Hampshire's Department of Health and Human Services mistakenly released the names and social security numbers of 9,300 Medicare Part D recipients to its service providers two weeks ago and is now notifying those affected.

In letters to clients and providers obtained by The Associated Press, the department said it is taking steps to make sure no information was used illegally. But the department is urging clients to initiate credit fraud alerts or freezes on their accounts.

The information was mistakenly attached to an e-mail to providers on Dec. 1.