Contact Us

National Blood Clot Alliance
PO Box 825687
Philadelphia, PA 19182-5687

Email: info@stoptheclot.org
Phone: 703.935.8845
Toll Free: 877.4.NO.CLOT

More Ways to Contact the National Blood Clot Alliance

Sign up for NBCA’s mailing list to receive news and updates concerning prevention, treatment, education and advocacy about blood clots and clotting disorders. Find out about NBCA-sponsored events and volunteer opportunities.

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Current News

Blood Clot Awareness Month Just Got Bigger and Brighter!

We are absolutely thrilled to reveal that the National Blood Clot Alliance has a public service announcement on the seven-story-high…

NBCA Urges Congress to Protect Americans From Blood Clots

The National Blood Clot Alliance Volunteer President Leslie Lake called upon Congress to protect the American public from blood clots…