Dennis Gillings Net Worth: $2.1 Billion

 Dennis Gillings

• Net Worth: $2.1 Billion
• Age: 76
• Born: 1949
• Country of Origin: United Kingdom
• Source of Wealth: Founder & Former CEO of Quintiles (now IQVIA)
• Last Updated: 2025

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Dennis Gillings – Net Worth Over the Years

Year	Net Worth
2019	$2.3 billion
2020	$2.4 billion
2021	$2.5 billion
2022	$2.6 billion
2023	$2.3 billion
2024	$2.1 billion

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Who is Dennis Gillings?

Dennis Gillings is a British entrepreneur and healthcare pioneer, best known as the founder of Quintiles, a company that became a global leader in providing outsourced services to the pharmaceutical and biotechnology industries. After merging with IMS Health in 2016, Quintiles became IQVIA, a company at the forefront of healthcare technology and analytics. Gillings played a crucial role in shaping the company, which now serves as a key player in drug development, clinical trials, and healthcare data management.

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Early Life

Dennis Gillings was born in 1949 in the United Kingdom. He graduated with a degree in mathematics from the University of London, which laid the foundation for his future in healthcare and technology. With a vision for improving healthcare through data, Gillings founded Quintiles in 1982, focusing on revolutionizing clinical trials and data management in the pharmaceutical industry.

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Career

In 1982, Dennis Gillings founded Quintiles, which rapidly became a leading provider of clinical trial management services. The company grew significantly by leveraging data analytics and technology to make the drug development process more efficient.

In 2016, Quintiles merged with IMS Health, creating IQVIA, a global leader in healthcare data analytics. IQVIA has since played a critical role in advancing medical research and improving patient outcomes by offering innovative solutions to pharmaceutical companies and healthcare providers.

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Achievements & Impact

• Founded Quintiles, which grew to become the largest provider of outsourced pharmaceutical services.
• Merged Quintiles with IMS Health to form IQVIA, making it a leader in healthcare analytics and technology.
• Pioneered the use of data and technology in the pharmaceutical industry, improving the drug development process and patient care.
• Played a key role in shaping the global healthcare landscape, with IQVIA providing cutting-edge analytics to improve clinical trials and drug development.

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Philanthropy & Education Initiatives

Dennis Gillings is committed to giving back to the community, particularly in healthcare and education. He has made significant donations to medical research, healthcare access initiatives, and educational programs aimed at supporting STEM fields. His philanthropic efforts focus on improving healthcare outcomes and enhancing public health systems.

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Lifestyle & Net Worth

Despite his success, Dennis Gillings leads a relatively low-profile lifestyle, focusing on his business and philanthropic efforts. His net worth in 2025 stands at $2.1 billion, reflecting his contributions to the healthcare industry and the success of IQVIA.

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Summary

Dennis Gillings has played a vital role in transforming the healthcare and pharmaceutical industries. By founding Quintiles and later merging it with IMS Health to create IQVIA, Gillings revolutionized how data is used to drive medical research, clinical trials, and patient care. His legacy as a healthcare innovator continues to have a lasting impact on the industry. Through IQVIA and his philanthropic initiatives, Gillings has left a significant mark on global healthcare.

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References

• “Dennis Gillings: Innovating Healthcare with Data” – Forbes
• “IQVIA: Transforming the Future of Healthcare” – Tech Insider
• “Dennis Gillings: The Vision Behind Quintiles and IQVIA” – Business Week