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

NBCA Names Ascension Sacred Heart as the Second NBCA VTE Center of Excellence™

The National Blood Clot Alliance (NBCA) is proud to welcome Ascension Sacred Heart in Pensacola, FL as the newest NBCA-designated…

AARP Spotlight: Leslie Lake’s Powerful Journey from Blood Clot Survival to Advocacy

Age is not just a number—it’s a significant risk factor for blood clots, a risk that escalates exponentially with each…