An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Key Personnel and Services

For general inquiries please send an email to agref@usda.gov or call 301-504-5755.

Names and contact information of our key personnel
Name Email Phone Number
Director (Acting)
Hanscom, Scott
scott.hanscom@usda.gov 301-504-5248
Deputy Director
Hanscom, Scott
scott.hanscom@usda.gov 301-504-5248
Administrative Office
Jackson, Sandy
sandy.jackson@usda.gov 301-504-5574
Executive Assistant to the Director
Rosa, Iris
iris.rosa@usda.gov 301-504-5248
Associate Director for Data Products Division (DPD) (Acting)
Bradsher, Charles
charles.bradsher@usda.gov 301-504-5040
Associate Director for Information Systems Division (ISD)
Pieper, Ursula
ursula.pieper@usda.gov 301-837-8920
Associate Director for Knowledge Services Division (KSD) (Acting)
Arbuckle, Peter
peter.arbuckle@usda.gov 301-837-8879
Associate Director for Information Products Division (IPD)
Guo, Jin Xiu
jinxiu.guo@usda.gov 240-499-6752
Chief, Acquisitions and Meta Data Branch
Bradsher, Charles
charles.bradsher@usda.gov 301-504-5040
Chief, Indexing and Informatics Branch (DPD)
Woodward-Greene, Jennifer
jennifer.woodward@usda.gov 301-504-6853
Chief, Applications Branch (ISD)
Romero, Ricardo S.
ricardo.s.romero@usda.gov 301-837-8927
Chief, Scientific Data Management Branch (KSD) (Acting)
Chkhenkeli, Nino
nino.chkhenkeli@usda.gov 301-837-8890
Chief, Information & Customer Services Branch (IPD)
Varner, Douglas
douglas.varner@usda.gov 301-450-5755
Chief, Digitization & Access Branch (DPD) (Acting)
Lee, Sara
sara.lee@usda.gov 301-504-9827
Chief, Digital Library Branch (IPD)
Adams, Kristina
kristina.adams@usda.gov 301-504-5486
Agricultural Reference Services
Customer Service Desk
agref@usda.gov 301-504-5755
Thesaurus
Suri, Sujata
sujata.suri@usda.gov 301-837-8931
Facilities Manager
Jermaine Winstead
301-504-5570
Document Delivery
Jusino, Manuel
manuel.jusino@usda.gov 202-690-4051