Idex is the preeminent source for information on expert witnesses. No other database in the country has more information on experts who have testified in or out of court than Idex. With a database of over 1,000,000 records on over 200,000 individuals, Idex's success rate in being able to find prior testimony on a given expert witness has gone from under 30% in the mid 80's to over 85% in recent years. The number of searches performed for clients has grown from less than 500 in the inaugural year to over 125,000 in 2007.

Idex was conceived in 1984 by St. Paul Insurance Company Claim Supervisor Tom Rogers. The concept was born out of the frustration that Tom, along with the attorneys and paralegals he was working with, had when trying to find information on expert witnesses. The basic premise was to create a network of insurance companies, law firms and self insured corporations who could contribute to and mutually benefit from a database of information on experts who were testifying in all types of cases throughout the country.

The business started slowly and grew as the databases expanded both from clients contributing information and from Idex's efforts in gathering information from public sources. For the first several years, the only service offered by the company was what it termed "Testimonial History". Later, other services such as professional disciplinary actions taken against an expert, articles authored by an expert and articles in which an expert's name has appeared, were added. In addition to these "expert specific" searches, Idex began to offer scientific and medical literature searches, similar case searches and expert referral services. Finally, Idex continues to add thousands of documents each year to its library of over 80,000 depositions, trial transcripts and C.V.s.  

The company's goal is to maintain its high level of personal service, continue to utilize technology in order to better serve clients and continue to pursue new services deemed valuable.