Subject Specialists
- Updated: 7/23/2025
- Contact: Website Administrator
Animal Products
| Topic | Name | |
|---|---|---|
| Animal Policy & Regulatory Issues | William Hahn | william.hahn@usda.gov |
| Aquaculture | Christopher G. Davis | christopher.davis2@usda.gov |
| Cattle & Beef | Russell Knight | russell.h.knight@usda.gov |
| Hannah Brooks (Taylor) | hannah.brooks@usda.gov | |
| Dairy | Angel Terán | angel.teran@usda.gov |
| Adriana Valcu-Lisman | adriana.valcu-lisman@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
| Topic | Name | |
|---|---|---|
| Corn and Other Feed Grains | Jennifer K. Bond | jennifer.bond@usda.gov |
| Cotton and Wool | Taylor Dew | taylor.dew@usda.gov |
| Leslie Meyer | leslie.meyer@usda.gov | |
| Fruit and Tree Nuts | Seth J. Wechsler | seth.wechsler@usda.gov |
| Helen Wakefield | helen.wakefield@usda.gov | |
| Catharine Weber | catharine.weber@usda.gov | |
| Rice | Nathan Childs | nathan.childs@usda.gov |
| Soybeans and Oil Crops | Bryn Swearingen | bryn.swearingen@usda.gov |
| Maria Bukowski | maria.bukowski@usda.gov | |
| Sugar and Sweeteners | Vidalina Abadam | vidalina.abadam@usda.gov |
| Vegetables and Pulses | Seth J. Wechsler | seth.wechsler@usda.gov |
| Wilma V. Davis | wilma.davis@usda.gov | |
| Catharine Weber | catharine.weber@usda.gov | |
| Wheat | Andrew Sowell | andrew.sowell@usda.gov |
Farm Economy
| Topic | Name | |
|---|---|---|
| Agricultural Baseline | Baseline Team | ers-baselineteam@usda.gov |
| Agricultural Research and Productivity | Eric Njuki | eric.njuki@usda.gov |
| Kelly P. Nelson | kelly.nelson@usda.gov | |
| Beginning, Limited Resource, and Female Farmers and Ranchers | Katherine Lacy | katherine.lacy@usda.gov |
| Bioenergy | Steven Ramsey | steven.ramsey2@usda.gov |
| Commodity Outlook | Jennifer K. 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 |
| Monika Ghimire | monika.ghimire@usda.gov | |
| Farm Labor | Steven Zahniser | steven.zahniser@usda.gov |
| Skyler Simnitt | skyler.simnitt@usda.gov | |
| Marcelo Castillo | marcelo.castillo@usda.gov | |
| Farm Sector Income & Finances | Farm Income Team | farmincometeam@usda.gov |
| Farm Structure and Organization | Daniel Bonin | daniel.bonin@usda.gov |
| Land Use, Land Value & Tenure | Scott Callahan | scott.callahan@usda.gov |
Farm Practices & Management
| Topic | Name | |
|---|---|---|
| Biotechnology | Laura Dodson | laura.dodson@usda.gov |
| Crop & Livestock Practices | Richard Nehring | richard.nehring@usda.gov |
| Fertilizers & Pesticides | Richard Nehring | richard.nehring@usda.gov |
| Irrigation & Water Use | Nicholas Potter | nicholas.potter@usda.gov |
| Risk Management | Agricultural Policy Team | ers-agriculturalpolicyteam@usda.gov |
Food & Nutrition Assistance
| Topic | Name | |
|---|---|---|
| Child Nutrition Programs | Jessica E. Todd | jessica.todd@usda.gov |
| Food Assistance Data & Collaborative Research Programs | Alana Rhone | alana.y.rhone@usda.gov |
| Mark Prell | mark.prell@usda.gov | |
| Food Security in the U.S. | Matthew P. Rabbitt | matthew.rabbitt@usda.gov |
| Madeline Reed-Jones | madeline.jones@usda.gov | |
| Laura J. Hales | laura.hales@usda.gov | |
| Poverty & Income Volatility | Erik Scherpf | erik.scherpf@usda.gov |
| Supplemental Nutrition Assistance Program (SNAP) | Erik Scherpf | erik.scherpf@usda.gov |
| Christian A. Gregory | christian.gregory@usda.gov | |
| Jordan W. Jones | jordan.jones2@usda.gov | |
| WIC Program | Leslie Hodges | leslie.hodges@usda.gov |
| Jessica E. Todd | jessica.todd@usda.gov |
Food Choices & Health
| Topic | Name | |
|---|---|---|
| Consumer Food Data System (CFDS) | Mark Prell | mark.prell@usda.gov |
| Alisha Coleman-Jensen | alisha.coleman-jensen@usda.gov | |
| Consumer Information and Labeling | Brandon J. Restrepo | brandon.restrepo@usda.gov |
| Diet Quality & Nutrition | Mariah Ehmke | mariah.ehmke@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 | Mariah Ehmke | mariah.ehmke@usda.gov |
Food Markets & Prices
| Topic | Name | |
|---|---|---|
| Consumer and Producer Price Indexes | Hayden Stewart | hayden.stewart@usda.gov |
| Food Prices, Expenditures, and Establishments | Hayden Stewart | hayden.stewart@usda.gov |
| Quinton Baker | quinton.baker@usda.gov | |
| Food Service Industry | Wilson Sinclair | wilson.sinclair@usda.gov |
| Eliana Zeballos | eliana.zeballos@usda.gov | |
| Local Foods | Katherine Lacy | katherine.lacy@usda.gov |
| Diansheng Dong | diansheng.dong@usda.gov | |
| Processing & Marketing | James Chandler Zachary | james.zachary@usda.gov |
| Retailing & Wholesaling | Eliana Zeballos | eliana.zeballos@usda.gov |
Food Safety
| Topic | Name | |
|---|---|---|
| Consumers | Sandra Hoffmann | sandra.a.hoffmann@usda.gov |
| Jae-Wan Ahn | jae-wan.ahn@usda.gov | |
| Markets, Regulation, and Policy | Kar Ho Lim | kar.lim@usda.gov |
| Michael Ollinger | michael.ollinger@usda.gov |
International Markets & U.S. Trade
| Topic | Name | |
|---|---|---|
| Countries & Regions | Felix G. Baquedano | felix.baquedano@usda.gov |
| International Consumer and Food Industry Trends | Steven Zahniser | steven.zahniser@usda.gov |
| Constanza Valdes | constanza.valdes@usda.gov | |
| International Food Security | Yacob Abrehe Zereyesus | yacob.zereyesus@usda.gov |
| Lila Cardell | lila.cardell@usda.gov | |
| Macroeconomics & Agriculture | William Johnson | william.johnson3@usda.gov |
| Wendy Zeng | wendy.zeng@usda.gov | |
| Trade Policy & World Trade Organization (WTO) | Brian Williams | brian.williams2@usda.gov |
| Katherine L. Baldwin | katherine.baldwin@usda.gov | |
| U.S. Agricultural Trade | Angelica Williams | angelica.williams@usda.gov |
| James Kaufman | james.kaufman@usda.gov |
Natural Resources & Environment
| Topic | Name | |
|---|---|---|
| Climate Change | Ron Sands | ron.sands@usda.gov |
| Conservation Programs | Kate Binzen Fuller | kate.fuller@usda.gov |
| Organic Agriculture | Sharon Raszap Skorbiansky | sharon.raszap@usda.gov |
Rural Economy & Population
| Topic | Name | |
|---|---|---|
| Business & Industry | James C. Davis | james.davis2@usda.gov |
| Employment & Education | Austin Sanders | austin.sanders@usda.gov |
| Brandon Genetin | brandon.genetin@usda.gov | |
| Natural Amenities | Laura Paul | laura.paul@usda.gov |
| Population & Migration | Justin B. Winikoff | justin.winikoff@usda.gov |
| Rural Classifications | Austin Sanders | austin.sanders@usda.gov |
| Rural Poverty & Well-Being | Tracey Farrigan | tracey.farrigan@usda.gov |