Which EHR's are reaching MU attestation?

Have you ever wondered which EMR/EHR firms are actually reaching MU attestation? I was checking out HealthData.gov and wanted a data set to play around with and noticed one called CMS Medicare and Medicaid EHR Incentive Program, electronic health record products used for attestation 

Data set merges information about the Centers for Medicare and Medicaid Services, Medicare and Medicaid EHR Incentive Programs attestations with the Office of the National Coordinator for Health IT, Certified Health IT Products List. This new dataset enables systematic analysis of the distribution of certified EHR vendors and products among those providers that have attested to meaningful use within the CMS EHR Incentive Programs. The data set can be analyzed by state, provider type, provider specialty, and practice setting. 


It is a large data set with 92,582 records I  ran a quick analysis to find the top 10 ten vendors (both inpatient and ambulatory and EP and Hospitals) just for fun. Note the data appears to be from April 2012 and it should be updated monthly but hasn't yet.

The top  ones are

Epic Systems Corporation	18523
Allscripts	11486
eClinicalWorks LLC	7101
NextGen Healthcare	5375
GE Healthcare	5177
Cerner Corporation	3728
Greenway Medical Technologies, Inc.	2436
athenahealth, Inc	2336