Whether out in the fields or in the office, our expert staff are dedicated to growing the organic movement and assisting farmers through rigorous research, education, and outreach.

Executive Team

Jeff Tkach

Chief Executive Officer

Jeff Moyer

CEO Emeritus

Becca Kahle

Human Resources Director

elaine macbeth

Elaine Macbeth

Chief Financial Officer, Senior V.P. of Administration

andrew smith

Andrew Smith, Ph.D.

Chief Operating Officer

Join the Team

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Bharat Sharma Acharya, Ph.D.

Research Director, Southeast Organic Center

Leigh Archer, Ph.D.

Perennial Systems Scientist

Annie Benson

Research Technician

Arianna Bozzolo, Ph.D.

Research Director, California Organic Center

Romans Caetani

Research Associate

Jean Bertrand Contina, Ph.D.

Research Director, Midwest Organic Center

Madhav Dhakal, Ph.D.

Crop and Weed Scientist

Carolyn Garrity

Research Technician

Arash Ghale, Ph.D.

Research Director, Pocono Organic Center

Said Hamido, Ph.D.

Soil Scientist

Philip Hinson, Ph.D.

Post-Doctoral Research Associate

Audrey Jenkins

Research Technician

Amiya Kalra

Research Technician

Casey Lapham

Research Technician

Sara Major

Research Technician

Dinesh Panday, Ph.D.

Post-Doctoral Research Associate, Pocono Organic Center

Jacob Pecenka, Ph.D.

Post-Doctoral Research Associate, California Organic Center

Kristie Wendelberger, Ph.D.

Climate-Smart Project Director

Gladis Zinati, Ph.D.

Director, Vegetable Systems Trial

Farm Operations

Rick Carr

Farm Director

Jesse Barrett

Food Production Specialist

Tim Colton

Farm Manager, Pacific Northwest Organic Center

Drew Erickson

Farm Manager, Midwest Organic Center

Katelynn Erm

Fruit Technician, St. Luke’s-Rodale Institute Organic Farm

Andrew Joyce

Farm Operations Technician

Daniel Lehner

Farm Mechanic

John Long

Greenhouse and Landscape Specialist

Katie Marcks

Farm Technician, Founders Campus

Lily Means

Assistant Farm Manager

Blake Morris

Farm Manager, Southeast Organic Center

Aslynn Parzanese

Farm Manager, St. Luke’s-Rodale Institute Organic Farm

Michael Schmaeling

Facilities Coordinator/Beekeeper, Founders Campus

Molly Schmaeling

Site Manager, Founders Campus

Amy Studzienko

Farm Operations Technician

Elyse Suter

Farm Technician, St. Luke’s-Rodale Institute Organic Farm

Tony de Veyra

Farm Manager, California Organic Center

Brandon Wehr

Assistant Farm Manager

Ross Williams

Farm Technician, St. Luke’s-Rodale Institute Organic Farm


Sam Malriat

Director, Organic Consulting

Dave Campbell

Organic Advisor

Everett Codd

Organic Advisor

Sage Dennis

Pennsylvania Organic Consultant

Dean Dickel

Organic Advisor

Bridget Gilmore

Organic and ROC Market Coordinator

Nathanael Gonzales-Siemens

Pacific Regional Manager

Kegan Hilaire

Small Farms and Diversified Vegetable Consultant

Samantha Hilborn-Naluai

New Mexico Organic Consultant

Ben Lehman

Midwest Organic Consultant

Catherine Peebles

Pennsylvania Organic Consultant

Nicholas Podoll

Northern Plains Regional Manager

Shandrea Stallworth, Ph.D.

Organic Consultant, Southeast Region

Léa Vereecke

Midwest Regional Manager


Renée Baran

Dean of Education

Justin Barclay

Global Education Operations Manager

Dan Kemper

Master Trainer

Maria Pop, M.Ed.

Director of Education

Marketing and Communications

David Pryor

Director of Marketing & Communications

Shawn Brown

Senior Visitor Experience Manager

Nadine Clopton

Program Manager

Heather Gurk

Manager, Visitor Center

Tammy Hobar

Brand Manager

Madison King

Social Media Specialist

Sarah Longenecker

Content Marketing Manager

Chloe Nouvelle

Communications Manager


Annie Brown

Vice President of Development

Warren Greene

Development Manager

Josh Lilly

Development Strategist

Ashley Minnerath

Community Relations Manager, Pacific Northwest Organic Center

Brittley Wills

Community Relations Manager, Southeast Organic Center


Idelfi Crespo

Senior Administrative Assistant, Consulting and Accounting

Stacy Glackin

Grants Manager

Linda Carlson-Lockwood


Ben Sidor

Grant Accountant


Emily Cantor

Facilities Technician

Louise DeVall

Programs Support Assistant and Travel Coordinator

Nate Hawk

Facilities Manager

Bruce Schroeder


Kim Schroeder

Executive Assistant

John Stiavelli

Senior Technology Analyst