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FounderPhillip (Terry) Ragon
HeadquartersCambridge, Massachusetts
Key people
Phillip (Terry) Ragon, Founder and CEO
ProductsInterSystems IRIS
Revenue$644,000,000 (2017)

InterSystems Corporation is a privately held vendor of software systems and technology for high-performance database management, rapid application development, integration, and healthcare information systems. The vendor's products include InterSystems IRIS Data Platform, Caché Database Management System, the InterSystems Ensemble[1] integration platform, the HealthShare healthcare informatics platform and TrakCare[2] healthcare information system,[3] which is sold outside the United States.

InterSystems is based in Cambridge, Massachusetts.[4] The company earned $644 million in 2017.[5]


InterSystems was founded in 1978 by Phillip T. (Terry) Ragon, its current CEO as of 2018. The firm was one of the original vendors of M-technology (aka MUMPS) systems, with a product called ISM.[6] Over the years, it acquired several other MUMPS implementations: DTM from Data Tree (1993); DSM from Digital (1995); and MSM from Micronetics (1998); making InterSystems the dominant M technology vendor.[citation needed]

The firm eventually started combining features from these products into one they called OpenM, then consolidated the technologies into a product, Caché, in 1997.[citation needed] At that time they stopped new development for all of their legacy M-based products (although the company stills supports existing customers). They launched Ensemble, an integration platform, in 2003[7] and HealthShare, a scalable health informatics platform, in 2006.[8] In 2007, InterSystems purchased TrakHealth[citation needed], an Australian vendor of TrakCare, a modular healthcare information system based on InterSystems technology. In May 2011, the firm launched Globals as a free database based on the multi-dimensional array storage technology used in Caché.[9] In September 2011, InterSystems purchased Siemens Health Services (SHS) France from its parent company, Siemens.[10] In September 2017, InterSystems announced InterSystems IRIS Data Platform, which, the company said, combines database management capabilities together with interoperability and analytics, as well as technologies such as sharding for performance.[11]


The company's products include:[12]


The largest customer for InterSystems is Epic, a leading health records vendor. Like InterSystems, Epic is privately held. "Both are rooted in an older programming language called MUMPS, developed at Mass General Hospital in the 1960s. Their founders coded the first products, and turned down outside investors, preferring to maintain control," said Zina Moukheiber in a Forbes profile in 2013.[13] Other large customers include the U.S. Department of Veterans Affairs; Partners HealthCare; Cleveland Clinic;[13] the National Health Services of England, Scotland and Wales;[6] the European Space Agency[14] and Credit Suisse.[6]

Microsoft dispute[edit]

On August 14, 2008, the Boston Globe reported that InterSystems was filing a lawsuit against Microsoft Corporation, another tenant in its Cambridge, Mass., headquarters, seeking to prevent Microsoft from expanding in the building. InterSystems also filed a lawsuit against building owner Equity Office Partners, a subsidiary of the Blackstone Group, "contending that it conspired with Microsoft to lease space that InterSystems had rights to, and sought to drive up rents in the process".[15]

In 2010, CEO Terry Ragon led a coalition in Cambridge called Save Our Skyline to protest a city zoning change that would have allowed more signs on top of commercial buildings, partly in response to Microsoft's desire to put a sign on top of their shared building.[16]

Both disputes were eventually settled, and Microsoft and InterSystems agreed to both put low signs only in front of the building at street level.


  1. ^
  2. ^
  3. ^ "Database Management & Healthcare Information Systems | InterSystems". InterSystems Corporation. Retrieved 2018-01-08.
  4. ^ "InterSystems Worldwide Offices".
  5. ^ "InterSystems Media Kit".
  6. ^ a b c Coffey, Brendan (2014-07-18). "Little-known InterSystems grows to dominate an IT market in age of Obamacare". Washington Post. ISSN 0190-8286. Retrieved 2018-01-08.
  7. ^ "Intersystems Launches Ensemble - Comprehensive Integration Platform Enables Rapid Implementation | InterSystems Corporation". InterSystems Corporation. Retrieved 2018-01-08.
  8. ^ "InterSystems Introduces HealthShare - High Performance, Massively Scalable Information Delivery Framework Targets RHIOs, HIE Networks Forming Worldwide | InterSystems Corporation". InterSystems Corporation. Retrieved 2018-01-08.
  9. ^ "Globals".
  10. ^ "InterSystems Takes Healthcare IT Leadership Position in France | InterSystems Corporation". InterSystems Corporation. Retrieved 2018-01-08.
  11. ^ "InterSystems press release".
  12. ^ "InterSystems Products".
  13. ^ a b Moukheiber, Zina. "Behind Epic Systems, A Low-Key Health IT Company Called InterSystems". Forbes. Retrieved 2018-01-08.
  14. ^ "Space Agency to map the galaxy with help from InterSystems". Enterprise Innovation | Asia's Premier Business and Technology Publication. Retrieved 2018-01-08.
  15. ^ Ross, Casey (August 14, 2008). "For Microsoft, not all is neighborly in Cambridge". The Boston Globe. Retrieved 2008-10-25.
  16. ^ Irons, Meghan (October 9, 2010). "Critics put city on notice over sign rules". Retrieved 2016-04-06.

External links[edit]