Branch Address - Southfield, MI 24300 Southfield Road, Suite 300 Southfield, MI 48075 Get Directions Local Contacts Shantel Brown Recruiter Phone: (248) 395-4142 Shantel.brown@gdi.com Regional Contacts Laura Horton Operations Director laura.horton@gdi.com Sandra Gronau V.P. Human Resources sandra.gronau@gdi.com Kevin Lhota Vice President of Business Development Phone: (708) 613-2164 kevin.lhota@gdi.com National Contacts Robin Wilkerson VP Business Development National Sales Robin.Wilkerson@gdi.com Antonio Iribarren VP Business Development National Sales Antonio.Iribarren@gdi.com Frankie Lopez VP Business Development Healthcare Frankie.Lopez@gdi.com