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The information contained in the Organizational Database (ODB) is provided for informational purposes only. There is no implied endorsement by NORD. NORD does not promote or endorse participation in any specific organization. The information is subject to change without notice. Every effort is made to ensure that the details for each entry are as current as possible.

National Blood Clot Alliance


8321 Old Courthouse Road, Suite 255
Vienna, VA 22182



800 Number


Email Address

[email protected]


The National Blood Clot Alliance (NBCA) formerly known as the National Alliance for Thrombosis and Thrombophilia is a nationwide, community-based, voluntary health organization committed to prevention and treatment of the major health problems caused by blood clots. NBCA's goal is to ensure that those affected by thrombosis and thrombophilia receive early diagnosis, proper treatment, and quality support. NBCA also supports research, education, and advocacy on behalf of affected individuals and their families.

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