Billionaire Profile
Phillip T. (Terry) Ragon
Global Rank
#992

Image: Public domain | via Wikimedia Commons

Phillip T. (Terry) Ragon

CEO, InterSystems Corporation
US
Real-Time Net Worth
$4.1B
As of December 2025
Age
76
Source
Health IT
Industry
technology
Citizenship
US

Biography

Phillip T. (Terry) Ragon, born in 1949, is a prominent figure in the technology industry, best known as the founder and CEO of InterSystems Corporation. With a net worth of $4.1 billion (December 5, 2025), Ragon's wealth stems from his pioneering work in Health IT. He established InterSystems in 1978, leading the company to global recognition in database management and healthcare information systems. His career highlights include building InterSystems into a multi-billion dollar enterprise and his commitment to philanthropy, as he and his wife signed The Giving Pledge in 2017. Ragon's achievements have significantly impacted the technology sector and medical research.

Wealth Over Time

In-Depth Profile

Early Life and Education

Phillip Terrence "Terry" Ragon was born in Arizona, the son of a U.S. Air Force fighter pilot. Due to his father's military career, he spent his childhood in various states and graduated from high school in Bogota, Colombia. Ragon displayed an early aptitude for science and technology, which led him to pursue higher education at the Massachusetts Institute of Technology (MIT).

Rise to Success

Ragon graduated from MIT in 1971 with a Bachelor of Science degree in physics. In 1978, he founded InterSystems Corporation in Cambridge, Massachusetts. InterSystems developed into a global leader in providing data management solutions for healthcare, finance, and other industries. Ragon has served as the CEO and owner of InterSystems since its inception. Under his guidance, the company has grown into a multi-billion dollar enterprise with a global presence.

Key Business Strategies

Ragon's leadership has been instrumental in InterSystems' success. The company's strategies involve providing advanced data management, integration, and analytics technologies. InterSystems focuses on solving interoperability, speed, and scalability problems for large organizations. The company’s commitment to 24/7 support for customers and partners worldwide reflects its dedication to excellence.

Philanthropy

Terry Ragon and his wife, Susan, are also known for their extensive philanthropic efforts. In March 2017, they signed The Giving Pledge, committing to donate at least half of their wealth to philanthropic causes. Their significant contributions include a $100 million pledge to AIDS research through the Phillip T. and Susan M. Ragon Institute at Massachusetts General Hospital (MGH) and a record $200 million donation to MGH in 2019. They further announced an additional $200 million donation to MGH for a vaccine-research center.

Career Milestones

1971

Graduated from MIT

Earned a Bachelor of Science in Physics from the Massachusetts Institute of Technology.

1978

Founded InterSystems Corporation

Established InterSystems in Cambridge, Massachusetts, to develop and sell database management and healthcare information systems.

2008

Co-created the Ragon Institute

Helped create the Ragon Institute, a joint research center of MGH, MIT, and Harvard.

2017

Signed The Giving Pledge

Committed to donate at least half of his wealth to philanthropic causes.

2019

Donated $200 Million to MGH

Made a significant donation to Massachusetts General Hospital, the largest in the hospital's history.

Philanthropy & Social Impact

Medical Research

Ragon Institute

$100M

Pledged $100 million over 10 years for AIDS research through the Phillip T. and Susan M. Ragon Institute at Massachusetts General Hospital (MGH).

Medical Research

Massachusetts General Hospital

$200M

Donated $200 million to MGH, the largest donation in the hospital's history.

Medical Research

Massachusetts General Hospital Vaccine-Research Center

$200M

Announced a further $200 million donation to MGH for a vaccine-research center.

Business Philosophy & Leadership

Notable Quotes

""I've learned more from my failures than I have from my successes.""

""My passion has been helping people in need in developing countries develop the ability to help themselves.""

Leadership Principles

Innovation

Focuses on providing advanced data management, integration, and analytics technologies.

Customer Focus

Committed to excellence through its 24×7 support for customers and partners around the world.

Philanthropy

Dedication to giving back through various charitable causes, notably in medical research.