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The World Bank
1818 H Street N.W.
Washington, DC 20433

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Medical Insurance Administrator for HQ Staff, Dependents, and Retirees Residing Inside the U.S., Aetna - Contact


Aetna is one of the medical insurance administrators for the Medical Insurance Plan (MIP) members. The MIP applies to eligible headquarters’ hired staff, retirees, and their eligible family member(s) for medical plans living inside or outside the U.S.

Aetna Phone, Fax & Mailing Address

Web: Email: Use this email address for claims questions & electronic claims

Aetna Phone numbers for Medical:

Customer Service 24/7:


Aetna MIP World bank staff support number:

1-202-473-8666 or x38666

Collect calls:


Aetna Fax Number:

Fax for Medical:

1-800-475-8751 or

Fax for Dental:


Attn: World Bank Team 81

Aetna Postal address for claims reimbursement:

Aetna - World Bank MIP
P.O. Box 14199
Lexington, KY 40512-4199

HR Operations for claims reimbursement: (mail service only)

MIP Claims/Aetna, MSN MC C3-309

Cigna Dental

Registration Guide

Toll-Free Number:
855.924.3368 #(855-WBG-DENT)

Postal Address:
Cigna Dental, P.O. Box 188037,
Chattanooga, TN 37422-8037


To submit claims via email for claims from dentists based Outside of the United States -

To submit claims via email for claims from dentists based in the United States -

Fax: 859.550.2662


Registration Guide

Toll-Free Number:

Email: (Click the 'Contact Us' option)


For out-of-network claim reimbursements, send an email to