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


Arash Ghale, Ph.D.

Research Director, Pennsylvania

Leigh Archer, Ph.D.

Perennial Systems Scientist

Annie Benson

Research Technician

Romans Caetani

Research Associate

Madhav Dhakal, Ph.D.

Crop and Weed Scientist

Carolyn Garrity

Research Technician

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

Sean Stokes, Ph.D.

Post-Doctoral Research Associate, Midwest 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

Farm Operations and Sales 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

Reyna Ortega-Aviles

Farm Operations Technician, California 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

Elyse Suter

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

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

Emily Miller

Operations Manager

Catherine Peebles

Pennsylvania Organic Consultant

Nicholas Podoll

Northern Plains Regional Manager

Jen Rose Silverman

New Mexico Program Coordinator

Shandrea Stallworth, Ph.D.

Organic Consultant, Southeast Region

Léa Vereecke

Midwest Regional Manager


Renée Baran

Dean of Education

Justin Barclay

Global Education Operations Manager

Maura Beuttel

Climate Smart Outreach Coordinator

Dan Kemper

Master Trainer

Maria Pop, M.Ed.

Director of Education

Marketing and Communications

David Pryor

Director of Marketing and 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

Senior Manager, Communications and Public Affairs


Annie Brown

Vice President of Development

Warren Greene

Development Manager

Josh Lilly

Development Strategist

Ashley Minnerath

Community Relations Manager, Pacific Northwest Organic Center


Idelfi Crespo

Senior Administrative Assistant, Consulting and Accounting

Louise DeVall

Programs Support Assistant and Travel Coordinator

Kim Schroeder

Executive Assistant

John Stiavelli

Senior Technology Analyst


Stacy Glackin

Grants Manager

Linda Carlson-Lockwood


Ben Sidor

Grant Accountant


Emily Cantor

Facilities Technician

Nate Hawk

Facilities Manager

Bruce Schroeder


Join the Team

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