Top 50 Test EHR Test Article Test
| # | Company | EHR System Name | Annual Company Revenue | Public or Private | Certification | MU2 certified (as of 9/27/13) | Website |
| 1 | Cerner Corporation | Cerner PowerChart Ambulatory EHR | $2.67 billion* | Public | CCHIT | X | cerner.com |
| 2 | Epic Systems Corporation | EpicCare Ambulatory - Core EMR | $1.50 billion* | Private | CCHIT | X | epic.com |
| 3 | Allscripts | Allscripts Professional™ EHR" | $1.45 billion | Public | CCHIT | X | allscripts.com |
| 4 | NextGen Healthcare Information Systems Inc* | NextGen Ambulatory EHR | $429.8 million | Public | CCHIT | X | nextgen.com |
| 5 | athenahealth | athenaClinicals | $422.3 million | Public | Surescripts LLC / CCHIT | X | athenahealth.com |
| 6 | GE Healthcare | Centricity | $293.0 million* | Public | CCHIT | X | gehealthcare.com |
| 7 | eClinicalWorks* | eClinicalWorks | $259.0 million | Private | CCHIT | X | eclinicalworks.com |
| 8 | McKesson | iKnowMed EHR, Horizon Ambulatory, Paragon | ** | Public | Durmmond Group | X | mckesson.com |
| 9 | Abraxas Medical Solutions (Merge Healthcare) | iconnect Network | $248.9 million* | Public | CCHIT; Surescripts | | merge.com |
| 10 | Vitera Healthcare Solutions | Vitera Intergy, Vitera Stat, Vitera Medical Manager | embargoed | Private | Drummond Group, Inc. | X | viterahealthcare.com |
| 11 | Computers Programs and Systems Inc. (CPSI) | CPSI System | $183.3 million* | Public | CCHIT | X | cpsi.com |
| 12 | Practice Fusion | Practice Fusion | 134.0 million | Private | Drummond Group | | practicefusion.com |
| 13 | Greenway Medical Technologies | Greenway PrimeSUITE | $124.0 million | Public | CCHIT | X | greenwaymedical.com |
| 14 | Platinum Systems Specialists, Inc. | PlatinumEMR | $100.0 million | Private | Surescripts LLC/ Drummond Group Inc / CCHIT | | platinumemr.com |
| 15 | Optum (Picis Inc) | Optum Physician EMR Suite | $78.5 million* | Public | CCHIT | | optuminsight.com |
| 16 | CompuGroup | CGM Clinical, CGM Enterprise EHR, CGM webEHR | $50.0 million | Public | CCHIT | | cgmus.com |
| 17 | T-System Inc | T-System | $46.2 million* | | CCHIT | X | tsystem.com |
| 18 | Meditab Software, Inc | Intelligent Medical Software (IMS) Clinical | $45.6 million* | Private | CCHIT/Surescripts | | meditab.com |
| 19 | CureMD | CureMD All-in-One EMR | $39.6 million* | Private | CCHIT, SureScripts | | curemd.com |
| 20 | Aprima Medical Software | also Aprima PRM (PM+EHR), Aprima EHR (standalone), Aprima PM (standalone) | embargoed | Private | CCHIT, InfoGard | X | aprima.com |
| 20b*** | Praxis EMR | Praxis Electronic Medical Records | $38.4 million | Private | Drummond | | praxisemr.com |
| 21 | Advanced Data Systems Corps | MedicsDocAssistant EHR | $30.1 million* | Private | CCHIT, Drummond Group | X | adsc.com |
| 22 | E-MDs | e-MDs Solution Series | $30.0 million | Private | Drummond Group | | e-mds.com |
| 23 | Nextech | Nextech Practice | embargoed | Private | CCHIT | | nextech.com |
| 24 | ADP AdvancedMD Software | AdvancedMD EHR | $22.8 million* | Public | CCHIT | | advancedmd.com |
| 25 | Kareo | Kareo EHR | $20.0 million | Private | Drummond Group | | kareo.com/ehr |
