Subject Specialists

This is a list of ERS specialists by topic. For more information on these topics please contact the specialists listed below or browse our topics. The ERS staff directory has a complete list of contacts.

Subject Specialist Email Phone
Animal Products
Animal Policy & Regulatory Issues William Hahn william.hahn@usda.gov
Aquaculture Christopher Davis christopher.davis2@usda.gov (301) 802-1509
Cattle & Beef Russell Knight russell.h.knight@usda.gov
Hannah Taylor hannah.taylor@usda.gov
Dairy Adriana Valcu-Lisman adriana.valcu-lisman@usda.gov
Angel Terán angel.teran@usda.gov
Hogs & Pork Mildred Haley mildred.haley@usda.gov
Poultry & Eggs Grace Grossen grace.grossen@usda.gov
Sheep, Lamb & Mutton William Hahn william.hahn@usda.gov
Crops
Corn and Other Feed Grains Aaron M. Ates aaron.ates@usda.gov
Christele Marsh christele.marsh@usda.gov
Todd Hubbs todd.hubbs@usda.gov
Cotton and Wool Leslie Meyer leslie.meyer@usda.gov
Taylor Dew taylor.dew@usda.gov
Philip Jarrell philip.jarrell@usda.gov
Fruit and Tree Nuts Catharine Weber catharine.weber@usda.gov
Seth Wechsler seth.wechsler@usda.gov
Helen Wakefield helen.wakefield@usda.gov
Rice Nathan Childs nathan.childs@usda.gov
Philip Jarrell philip.jarrell@usda.gov
Soybeans and Oil Crops Maria Bukowski maria.bukowski@usda.gov
Bryn Swearingen bryn.swearingen@usda.gov
Todd Hubbs todd.hubbs@usda.gov
Sugar and Sweeteners Vidalina Abadam vidalina.abadam@usda.gov
Vegetables and Pulses Wilma Davis wilma.davis@usda.gov
Catharine Weber catharine.weber@usda.gov
Seth Wechsler seth.wechsler@usda.gov
Wheat Andrew Sowell andrew.sowell@usda.gov
Todd Hubbs todd.hubbs@usda.gov
Farm Bill
2024 Farm Bill      
2018 Farm Bill      
2014 Farm Bill      
Farm Economy
Agricultural Baseline Baseline Team ers-baselineteam@usda.gov
Agricultural Research and Productivity Keith Fuglie keith.fuglie@usda.gov
Sun Ling Wang sunling.wang@usda.gov
Eric Njuki eric.njuki@usda.gov
Bioenergy Steven Ramsey steven.ramsey2@usda.gov
Commodity Outlook Jennifer Bond jennifer.bond@usda.gov
Farm & Commodity Policy Agricultural Policy Team ers-agriculturalpolicyteam@usda.gov
Farm Household Well-being Katherine Lim katherine.lim@usda.gov
Farm Labor Marcelo Castillo marcelo.castillo@usda.gov
Skyler Simnitt skyler.simnitt@usda.gov
Steven Zahniser steven.zahniser@usda.gov
Farm Sector Income & Finances Farm Income Team farmincometeam@usda.gov
Farm Structure and Organization Daniel Bonin daniel.bonin@usda.gov
Federal Tax Issues Tia McDonald tia.mcdonald@usda.gov
Land Use, Land Value & Tenure Scott Callahan scott.callahan@usda.gov
Clayton Winters-Michaud clayton.michaud@usda.gov
Socially Disadvantaged, Beginning, Limited Resource, and Female Farmers and Ranchers Katherine Lacy katherine.lacy@usda.gov
Farm Practices & Management
Biotechnology Laura Dodson laura.dodson@usda.gov
Fertilizers & Pesticides Roberto Mosheim roberto.mosheim@usda.gov
Richard Nehring richard.nehring@usda.gov
Crop & Livestock Practices Nigel Key nigel.key@usda.gov
Irrigation & Water Use R. Hrozencik aaron.hrozencik@usda.gov
Risk Management Francis Tsiboe francis.tsiboe@usda.gov
Dylan Turner dylan.turner2@usda.gov
Food & Nutrition Assistance
Child Nutrition Programs Joanne Guthrie joanne.guthrie@usda.gov
Saied Toossi saied.toossi@usda.gov
Jessica Todd jessica.todd@usda.gov
Food Assistance Data & Collaborative Research Programs Mark Prell mark.prell@usda.gov
Alana Rhone alana.y.rhone@usda.gov
Food Security in the U.S. Matthew Rabbitt matthew.rabbitt@usda.gov
Laura Hales laura.hales@usda.gov
Madeline Reed-Jones madeline.jones@usda.gov
Poverty & Income Volatility Laura Tiehen laura.tiehen@usda.gov
Supplemental Nutrition Assistance Program (SNAP) Jordan Jones jordan.jones2@usda.gov
Erik Scherpf erik.scherpf@usda.gov
Christian Gregory christian.gregory@usda.gov
WIC Program Leslie Hodges leslie.hodges@usda.gov
Jessica Todd jessica.todd@usda.gov
Food Choices & Health
Diet Quality & Nutrition Sabrina Young sabrina.young@usda.gov
Consumer Information and Labeling Brandon Restrepo brandon.restrepo@usda.gov
Food Access Alana Rhone alana.y.rhone@usda.gov
Food Consumption & Demand Abigail Okrent abigail.okrent@usda.gov
Diansheng Dong diansheng.dong@usda.gov
Hayden Stewart hayden.stewart@usda.gov
Obesity Joanne Guthrie joanne.guthrie@usda.gov
Mariah Ehmke mariah.ehmke@usda.gov
Consumer Food Data System (CFDS) Mark Prell mark.prell@usda.gov
Alisha Coleman-Jensen alisha.coleman-jensen@usda.gov
Food Markets & Prices
Consumer and Producer Price Indexes Megan Sweitzer megan.sweitzer@usda.gov
Food Prices, Expenditures, and Establishments Patrick Canning patrick.canning@usda.gov
Hayden Stewart hayden.stewart@usda.gov
Andrea Carlson andrea.carlson@usda.gov
Food Service Industry Eliana Zeballos eliana.zeballos@usda.gov
Wilson Sinclair wilson.sinclair@usda.gov
Local Foods Anne Byrne anne.byrne@usda.gov
Ashley Spalding ashley.spalding@usda.gov
Processing & Marketing James Zachary james.zachary@usda.gov
Retailing & Wholesaling Anne Byrne anne.byrne@usda.gov
Eliana Zeballos eliana.zeballos@usda.gov
Food Safety
Consumers Sandra Hoffmann sandra.a.hoffmann@usda.gov
Jae-Wan Ahn jae-wan.ahn@usda.gov
Markets, Regulation, and Policy Michael Ollinger michael.ollinger@usda.gov
Kar Ho Lim kar.lim@usda.gov
International Markets & U.S. Trade
U.S. Agricultural Trade Bart Kenner bart.kenner@usda.gov 816-702-4815
James Kaufman james.kaufman@usda.gov
Angelica Williams angelica.williams@usda.gov
Countries & Regions Felix Baquedano felix.baquedano@usda.gov
Africa Michael Johnson michael.johnson7@usda.gov
Brazil Constanza Valdes constanza.valdes@usda.gov
China Fred Gale fred.gale@usda.gov
China Jessie Lin jessie.lin@usda.gov 771-221-5988
European Union Jeremy Jelliffe jeremy.jelliffe@usda.gov
India Kayode Ajewole kayode.ajewole@usda.gov
USMCA, Canada, & Mexico Steven Zahniser steven.zahniser@usda.gov
International Consumer and Food Industry Trends Steven Zahniser steven.zahniser@usda.gov
Constanza Valdes constanza.valdes@usda.gov
International Food Security Yacob Zereyesus yacob.zereyesus@usda.gov
Lila Cardell lila.cardell@usda.gov
Macroeconomics & Agriculture Wendy Zeng wendy.zeng@usda.gov
William Johnson william.johnson3@usda.gov
Trade Policy & World Trade Organization (WTO) Katherine Baldwin katherine.baldwin@usda.gov
Brian Williams brian.williams2@usda.gov
Natural Resources & Environment
Climate Change Ron Sands ron.sands@usda.gov
Conservation Programs Steven Wallander steve.wallander@usda.gov
Environmental Quality Steven Wallander steve.wallander@usda.gov
Organic Agriculture Sharon Raszap Skorbiansky sharon.raszap@usda.gov
Rural Economy & Population
Business & Industry John Pender john.pender@usda.gov
Employment & Education Tracey Farrigan tracey.farrigan@usda.gov
Austin Sanders austin.sanders@usda.gov
Natural Amenities David McGranahan david.mcgranahan@usda.gov
Population & Migration John Cromartie john.cromartie@usda.gov
Rural Classifications Austin Sanders austin.sanders@usda.gov
John Cromartie john.cromartie@usda.gov
Rural Poverty & Well-Being Tracey Farrigan tracey.farrigan@usda.gov