Previous systems (most common EHRs switched from)	Current systems (most common EHRs switched to)
Centricity EMR (N = 30)	EpicCare Ambulatory (N = 74)
eClinicalWorks (N = 27)	eClinicalWorks (N = 34)
Allscripts Professional EHR (N = 22)	Praxis (N = 30)
NextGen Ambulatory EHR (N = 22)	Allscripts Professional EHR (N = 18)
Practice Partner (N = 18)	NextGen Ambulatory EHR (N = 18)
Misys EMR (N = 14)	athenaClinicals (N = 17)
Allscripts Enterprise (N = 13)	Cerner Millennium PowerChart/PowerWorks (N = 15)
athenaClinicals (N = 11)	Allscripts TouchWorks EHR (Allscripts Enterprise) (N = 13)
EpicCare Ambulatory (N = 11)	Practice Fusion (N = 12)
SOAPware (N = 10)	Amazing Charts (N = 11)
Proprietary systems (N = 8)	e-MDs (N = 9)
e-MDs (N = 8)
Cerner Millennium PowerChart/PowerWorks (N = 7)
Practice Fusion (N = 7)
Allscripts MyWay (N = 6)
Amazing Charts (N = 6)
ChartConnect (N = 6)
Horizon Ambulatory Care (N = 5)
McKesson Practice Complete (N = 4)
Praxis (N = 4)
Centricity Practice Solution (N = 3)
MPM (LSS/Meditech) (N = 3)
AHLTA (N = 2)
Amicore PenChart (N = 2)
CGM Clinical (N = 2)