National Blood Clot Alliance

What National Blood Clot Alliance does

The National Blood Clot Alliance (NBCA) is a 501(c)(3) nonprofit patient advocacy organization founded in 2003 and headquartered in Philadelphia, PA, dedicated to advancing the prevention, early diagnosis, and successful treatment of venous thromboembolism (VTE), including deep vein thrombosis (DVT), pulmonary embolism (PE), and clot-provoked stroke. NBCA serves three primary constituencies: patients and individuals at risk for blood clots (including those with clotting disorders, atrial fibrillation, cancer, hospitalization, surgery, pregnancy, and hormonal birth control-related risks); healthcare professionals seeking continuing education and clinical resources; and the general public via community outreach in 20+ states. Its core product portfolio comprises the CDC-partnered Stop the Clot, Spread the Word® public education campaign (reaching 210M+ people), the VTE Centers of Excellence™ institutional designation network (including the first pediatric and first community DVT designations), the PEP Talk webinar series, the Taking a Breath podcast, an online CE-accredited VTE curriculum, risk-assessment tools, peer support programs, and the Blood Clot Awareness Bus Tour mobile education initiative. NBCA's technology stack is content-centric, built on web platforms, downloadable educational resources, podcast distribution, and webinar infrastructure rather than proprietary software or AI capabilities.

NBCA operates a non-commercial revenue model funded through individual donations (including a summer matching campaign with a $150,000 personal match from Volunteer President Leslie Lake), corporate partnerships and sponsorships (Anthos, Cardinal Health, Grifols, Johnson & Johnson, United Healthcare, and others), educational grants from medical technology companies (e.g., Penumbra for the Mississippi Bus Tour), and government grants, most notably a CDC cooperative agreement (1U27DD001153-02) that supported the Stop the Clot, Spread the Word® campaign before the 2025 shutdown of the CDC Division of Blood Disorders reduced NBCA's funding by approximately one-third. The organization holds Charity Navigator's four-star rating and Candid's Platinum Seal of Transparency, and is led by a volunteer president and small professional staff of 1-10 employees.

Name

National Blood Clot Alliance

Legal name

National Blood Clot Alliance

Website

https://stoptheclot.org

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

1–10 employees

Short description

The National Blood Clot Alliance is a 501(c)(3) nonprofit founded in 2003 that advances the prevention, early diagnosis, and treatment of venous thromboembolism through public education campaigns, healthcare professional training, a national VTE Centers of Excellence designation network, peer support, and policy advocacy.

Ownership category

akta.pro rank

Product category

Patient Advocacy and Health Education

NAICS

Voluntary Health Organizations (813212), Social Advocacy Organizations (8133), Individual and Family Services (6241)

SIC

Services-Health Services (8000), Services-Social Services (8300)

akta.pro primary industry

Public Health & Health Equity Organizations (BPAGACAL)

akta.pro secondary industry

Social Determinants of Health (SDOH) & Equity Measurement (HLAJAJAI)

Keywords

• Patient advocacy services
• Blood clot education
• Venous thromboembolism awareness
• Healthcare professional training
• Nonprofit health organization

Headquarters

HQ city

Philadelphia

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Donations and Charitable Contributions: Tax-deductible gifts from individual donors supporting NBCA's mission to advance prevention, early diagnosis, and treatment of blood clots. The organization runs campaigns including summer matching campaigns with volunteer president Leslie Lake matching donations up to $150,000.
2. Corporate Partnerships and Sponsorships: Support from pharmaceutical and medical device companies including Anthos, Grifols, Penumbra, Cardinal Health, and others listed as generous partners on the website.
3. Educational Grants: Funding from medical technology companies such as Penumbra, Inc. for specific educational initiatives like the Mississippi Blood Clot Awareness Bus Tour.
4. Government Grants: Funding from the Centers for Disease Control and Prevention (CDC) for the Stop the Clot, Spread the Word® public education campaign under Cooperative Agreement number 1U27DD001153-02.

Distribution channels5 records

Marketing channels11 records

Core offering

The National Blood Clot Alliance (NBCA) is a 501(c)(3) nonprofit that advances the prevention, early diagnosis, and successful treatment of life-threatening blood clots (deep vein thrombosis, pulmonary embolism, clot-provoked stroke). It delivers public awareness campaigns, healthcare institution recognition programs, patient and clinician education resources, peer support, and public policy advocacy, all distributed free of charge to patients, caregivers, healthcare professionals, and the general public.

Product overview

The National Blood Clot Alliance operates as a comprehensive patient advocacy organization offering a unified portfolio of educational programs, recognition initiatives, and support services centered on blood clot awareness, prevention, and treatment. The core offerings include the Stop the Clot, Spread the Word® public education campaign developed with the CDC, the NBCA VTE Centers of Excellence™ and Community DVT Excellence Program (hospital and outpatient recognition programs), PEP Talk webinar series, Taking a Breath podcast, online CE curriculum for healthcare professionals, risk assessment tools, peer support community, and the Team Stop the Clot® athletic initiative. The organization also conducts mobile education through its Blood Clot Awareness Bus Tours and trains volunteer Community Thrombassadors. Specialized programming includes the Women & Blood Clots sub-brand addressing pregnancy and hormonal risks, the NBCA Advocacy Institute for policy work, and the New Patient Resource Guide for newly diagnosed patients.

Differentiator

Problem solved

Functional benefit

Products and services

• Stop the Clot, Spread the Word® Campaign

Quantifiable outcome

• Over 210 million people reached with blood clot awareness messaging through Stop the Clot, Spread the Word® campaign
• +2 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Four partnerships are on record, tiered flagship and core.

• Penumbra, Inc.flagshipOthers · 14 May 2026Penumbra, Inc., a global thrombectomy company focused on innovative technologies for ischemic stroke, VTE, and acute limb ischemia, provided an educational grant to fund NBCA's 2026 Mississippi Blood Clot Awareness Bus Tour. The tour traveled across Mississippi from May 16-26, 2026, bringing lifesaving blood clot education directly to medically underserved communities.
• Centers for Disease Control and Prevention (CDC)flagshipStrategic or Co-development PartnerNBCA works in partnership with the CDC on the Stop the Clot, Spread the Word® public health campaign under Cooperative Agreement number 1U27DD001153-02. The campaign aims to raise awareness about blood clot risks, symptoms, and prevention strategies across the United States.
• American Heart Association (AHA) and American College of Cardiology (ACC)coreStrategic or Co-development PartnerNBCA collaborated with AHA and ACC in the development of 2026 clinical guidelines for acute pulmonary embolism evaluation and management. NBCA's involvement ensured a focus on patient-centered care and patient perspectives in the guidelines.
• Leiden University Medical CentercoreStrategic or Co-development PartnerDr. Erik Klok from Leiden University Medical Center in the Netherlands was appointed to NBCA's Medical and Scientific Advisory Board, enhancing NBCA's global mission against VTE and expanding outreach beyond U.S. borders.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• American Lung Association: Major U.S. lung health nonprofit with overlapping interest in pulmonary embolism and post-PE lung complications. A larger incumbent with national reach and substantially greater fundraising capacity.
• American Cancer Society: Largest U.S. cancer nonprofit; cancer-associated VTE is NBCA's documented second-leading cancer-related cause of death. Overlapping patient population and co-branded educational materials make this a thematically adjacent broad incumbent.
• American Heart Association: The largest U.S. cardiovascular nonprofit and a co-author with NBCA on the 2026 PE guidelines. AHA addresses blood clots as one topic within a broader cardiovascular portfolio, making it a broad incumbent with overlapping mission, donor base, and clinical authority.

Emerging players

• Vascular Cures: Patient-centered nonprofit focused on vascular disease including VTE. Operates as a smaller, emerging peer with overlapping patient advocacy and research mission in the same vascular medicine space.
• Clot Connect: University of North Carolina–affiliated VTE education program for patients and providers. Closely aligned VTE-specific educational mission that complements or competes with NBCA's PEP Talk webinars and online VTE curriculum.
• Anticoagulation Forum: Professional society focused on anticoagulation management, the primary treatment for blood clots. Closely aligned clinical community that NBCA engages for guideline co-development and provider education.

Direct peers

• World Thrombosis Day (ISTH): International campaign led by the International Society on Thrombosis and Haemostasis focused on VTE awareness globally. Closely aligned mission to NBCA's Stop the Clot campaign and a key international counterpart in blood clot awareness.
• Sickle Cell Disease Association of America: U.S. voluntary health organization serving a population at elevated risk of VTE. Operates a comparable community education, patient support, and advocacy model targeted at a specific blood-related disease community.
• Pulmonary Hypertension Association: Voluntary health organization focused on a condition closely linked to pulmonary embolism. Operates with a similar patient education, peer support, and Centers of Excellence model, making it a closely comparable disease-specific nonprofit.
• National Hemophilia Foundation: U.S. voluntary health organization focused on bleeding and clotting disorders, with a comparable nonprofit structure, patient education model, peer support community, and Centers of Excellence program that mirrors NBCA's approach.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xtwitter.com/stoptheclot
• YouTubeyoutube.com/user/stoptheclot
• Facebookfacebook.com/825607967551675
• Instagraminstagram.com/stoptheclot
• Pinterestpinterest.com/stoptheclot

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about National Blood Clot Alliance