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Employer Identification Number (EIN)

The Health Insurance Portability and Accountability Act of 1996 (HIPAA) required the establishment of a standard national employer identifier to be used in certain electronic transactions. The Final Rule was published in the Federal Register on May 31, 2002 and became effective July 30, 2002.

EIN Fact Sheet

“On October 1, 2013, the Department of Defense established the Defense Health Agency (DHA) to manage the activities of the Military Health System. These activities include those previously managed by TRICARE Management Activity (TMA), which was disestablished on the same date. During the next several months, all TMA websites will change to reflect the new DHA. We appreciate your patience during this transition."
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7700 Arlington Boulevard, Suite 5101, Falls Church, VA 22042-5101
The appearance of hyperlinks to external Web sites does not constitute endorsement by the TRICARE Management Activity of these Web sites or the information, products or services contained therein. For other than authorized government activities, TRICARE Management Activity does not exercise any editorial control over the information you may find at other locations. Such links are provided consistent with the stated purpose of this DoD Web site. Accessibility/Section 508