Quality Systems, Inc. Corporate Headquarters
18191 Von Karman, Suite 450
Irvine, California 92612
800.888.7955 (phone)
949.255.2605 (fax)
QSI Corporate (email)
Webmaster (email)
Sales/Marketing (email)

NextGen Healthcare Information Systems, Inc.
795 Horsham Rd, Second Floor
Horsham PA 19044
215-657-7010 (phone)
215.657.7011 (fax)
Webmaster (email)
Sales/Marketing (email)