Your Contacts

DMDC/DEERS Support Office (DSO)

Toll-free: 1-800-538-9552
TTY/TTD: 1-866-363-2883
Fax: 1-800-336-4416 (Primary) or 1-502-335-9980 (Alternate)

Update DEERS Online


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Get Proof of TRICARE Coverage

The "Proof of Insurance" feature on milConnect lets you generate, save, and print an Eligibility Letter that provides proof of current health care coverage under TRICARE.

  • Sponsors can access Eligibility Letters for themselves and for their eligible family members
  • Family members can access only their own Eligibility Letters.

Online Request

  • Log in to milConnect.
  • Click on the “Obtain proof of health coverage” button.
  • Or click on Correspondence/Documentation and choose "Proof of Coverage."
  • Your coverage letter will be generated and available for download.

The letter will only reflect current TRICARE eligibility for all family members selected.

Written Request

You can mail or fax a written request to the DMDC Support Office. Include the following information on your request:

  1. Sponsor's name and Social Security number
  2. Name of all family members to be included on the letter
  3. Name and address of the person the request should be sent to
  4. Signature of the requestor

Fax the request to 1-800-336-4416 (Primary) or 1-502-335-9980 (Alternate), or mail it to the Defense Manpower Data Center at the following address:

DMDC Support Office
400 Gigling Road
Seaside, CA 93955

Last Updated 8/5/2021