- Medical & Rx Benefits
- Ancillary Benefits
- About Us
You can contact the IAM Benefit Trust Fund Office directly to get more information about the plan.
- Phone: 800-457-3481 (participants); 202-785-8148 (others). Our phones are open Monday through Friday, 8:30 a.m. to 4:00 p.m. Eastern Time.
- Mail: National IAM Benefit Trust Fund, 99 M Street, SE, Suite 600, Washington, DC 20003-4595
- E-mail: Click Here