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United States

Main Office
World Corporate Headquarters and Center for Learning & Technology
1225 Washington Pike, Bridgeville, Pennsylvania, 15017-2838, United States
Tel: (800) 933-4463 or 412-257-0600 | Fax: (412) 220-2942
info@ddiworld.com | Get directions | Google map
Other US Offices
Atlanta, Georgia
LakePointe Building, 1700 Water Place, SE - Suite 216, Atlanta, GA, 30339, United States
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Chicago, Illinois
8420 West Bryn Mawr Avenue, Suite 1030, Chicago, IL, 60631, United States
Dallas, Texas
15301 Dallas Parkway, Suite 1000, Addison, TX, 75001, United States
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Detroit, Michigan
20750 Civic Center Drive, Suite 350, Southfield, MI, 48076, United States
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New York, New York
777 3rd Avenue, Corner of 48th Street, 32nd Floor, New York, NY, 10017, United States
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San Francisco, California
4160 Dublin Boulevard, 4th Floor, Suite 450, Dublin, CA, 94568, United States
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Talent Ready for Business – Worldwide

Development Dimensions International (DDI) has a global infrastructure of 42 wholly-owned or closely affiliated offices delivering to more than 90 countries. Each of the offices in the United States operates purpose-built training and assessment centers.


Our world headquarters is in Pittsburgh, Pennsylvania, USA. For more information,
call +1-412-257-0600, toll free in the US or Canada at +1-800-933-4463 or email us at info@ddiworld.com.

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+1 (800) 933-4463
+1 (412) 257-0600