According to a new report from the Austin, Texas-based software buying consulting firm, Software Advice, 21.89 percent of all meaningful use attestations for a complete EHR through October 2012 were done using a product from Epic Systems Corporation (Verona, Wisc.). The report says that in total Epic has 23,446 complete EHR meaningful use attestations, nearly doubling the next closest vendor, Allscripts (Chicago), which has 12,741.

The report says that in total, 115,918 eligible professionals (EPs) in an ambulatory care setting have attested for meaningful use. 107,112 of those, the report says, are for a complete EHR. Most EPs used Epic, followed by Allscripts, then eClinicalWorks, NextGen, and GE Healthcare. Overall, Software Advice says there are 387 vendors that have attestations for a modular or complete EHR. With 623 vendors listed on the Office of the National Coordinator for Health IT’s site, the report notes how a large number of vendors don’t have a single attestation.

Similar reports and surveys have also put Epic at the top of the EHR vendor market share heap.

The full list of attestations can be viewed here.