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.

You can also connect with NBCA on Facebook, Twitter, Instagram and Pinterest.

Current News

Legislative Update: Blake Burgess Act Advances in Oklahoma

We are pleased to share that House Bill 3644 (HB 3644), the “Blake Burgess Act,” passed through the House yesterday.…

National Blood Clot Alliance Applauds New Multi-Society Clinical Guidelines for Acute Pulmonary Embolism

WASHINGTON, D.C. — The National Blood Clot Alliance (NBCA) celebrates a landmark moment in cardiovascular health as the American Heart Association…