Contact Us

Business Hours
Monday to Friday, 8:30 am to 5:00 pm, Eastern

National Blood Clot Alliance
8321 Old Courthouse Road, Suite 255
Vienna, VA  22182

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

Expecting or recently had a baby? Don’t let a blood clot spoil your joy.

Today, the National Blood Clot Alliance, in collaboration with the Centers for Disease Control …

Back to Campus: Birth Control & Blood Clots

Millions of students will be stepping on campuses across the United States in the upcoming …