Cerner still owns the greatest market share for EHR, though smaller vendors are flourishing

In accordance to latest Kalorama report, Cerner still leads the market share for electronic health record (EHR) vendors in the USA, beating out key rivals Epic and Mckesson.
Market share of McKesson was second while Epic came in third. The positions were the same previous year.

The report, EMR Market 2017: Electronic Medical Records in an Era of Disruption, also demonstrated that various smaller companies are flourishing.
Kalorama observes abundant opportunities for disruption, though, as annoyed physicians and hospitals are itching to switch vendors and the Trump administration’s modifications in government policy shake up outlooks.
Bruce Carlson, publisher of Kalorama Information, claimed in a statement, "Some companies have more than half the market, but it is still true to say no company – not even the greatest healthcare IT firms – has even a fifth of this market.”
In accordance to Kalorama, spurring disruption are EMR users unhappy with usability, vendor-switching, deficiency of mindshare in the market and clients who simply need something better. 
Cerner is sustaining to add new business and services with CernerITWorks, a suite of services that tackles a variety of activities for hospital IT departments.
Kalorama also claimed Cerner’s RevWorks, which gives RCM services, is assisting the company stay very powerful in the hospital IT market. Also, Cerner’s past acquisition of Siemens IT was a huge move that empowered Cerner's market share and the company’s securing of the Department of Defense EMR agreement also helped its position in the market.
As for McKesson, Kalorama analyzes it as positioned to expand its offerings. It already provides a broad range of solutions ranging from medication safety and revenue cycle management to resource utilization.
However, third-place Epic boasts that several of the large and prestigious healthcare systems across the country are customers, and Kalorama hopes the Verona, Wisconsin-based company will sustain to land an important share of the new business in the electronic health record market.
According to Kalorama, Allscripts Healthcare Solutions is fourth. The company has been in top five for various years.
GE Healthcare, Intersystems, athenahealth, QSI/NextGen, Meditech, Greenway, eClinicalWorks and almost 600 other companies make up the rest of the market.