Corporate Headquarters

P.O. Box 13476
Research Triangle Park, North Carolina 27709

4920 South Alston Avenue
Durham, NC  27713
Main number: 919.314.1001
Customer Service:  919.314.1003
Fax: 919.314.1010
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Charlotte Regional Office

3330 Oak Lake Boulevard
Charlotte, North Carolina 28208
Main number:  704.357.7900
Fax:  704.357.7901
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Triad Regional Office

8012 Industrial Village Road
Greensboro, North Carolina 27409
Main number:  336.665.9294
Winston-Salem 336.721.1207
Fax:  336.605.1955
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