International Society of Arboriculture > Who We Are > Our Leaders

Who We Are

To reach staff by phone, please dial (USA) +1.678.367.0981 and their three-digit extension.

Administration

Caitlyn Pollihan

CEO and Executive Director

Email Caitlyn Pollihan

Ext. 201

Crystal Johnson

Governance and Administration Executive Assistant

Email Crystal Johnson

Ext. 230

Credentialing Services

Luana Vargas

Director of Credentialing Services

Email Luana Vargas

Ext. 213

Lucia Coghlan

Credential Services Manager

Email Lucia Coghlan

Ext. 241

Tabitha Schwartz

Credentialing Partner and Operations Manager

Email Tabitha Schwartz

Ext. 206

Lukas Alfen

Publication and Documentation Lead

Email Lukas Alfen

Ext. 255

Niko Young

Credentialing Operations Specialist

Email Niko Young

Ext. 244

Samantha Ramirez

Credential Services Specialist

Email Samantha Ramirez

Ext. 205

Imani Berry

Examinations Development Lead

Email Imani Berry

Ext. 243

Customer Service Center

Etta Lester

Customer Service Manager

Email Etta Lester

Ext. 249

Sierra McGrath

Customer Service Specialist

Email Sierra McGrath

Ext. 218

Educational Products and Services

Jamie Vidich

Director of Educational Products and Services

Email Jamie Vidich

Ext. 203

Rebekah Holtzclaw

Editorial Assistant

Email Rebekah Holtzclaw

Ext. 218

Owen Barnes

Instructional Designer

Email Owen Barnes

Ext. 252

Lindsey Mitchell

Managing Editor

Email Lindsey Mitchell

Ext. 204

Avery Lewis

Editorial and Publishing Specialist

Email Avery Lewis

Ext. 228

Chericka Ashley

Educational Products and Services Manager

Email Chericka Ashley

Ext. 226

Financial Services

Fred Harroway

Director of Financial Services

Email Fred Harroway

Ext. 221

Karen Lacatell

Accounting Specialist

Email Karen Lacatell

Ext. 219

Brenda Rose

Accounting Specialist

Email Brenda Rose

Ext. 222

Human Resources and People Services

Chastity Austin

Director of HR and Compliance Services

Email Chastity Austin

Ext. 215

Marketing and Event Services

Alice Bagley

Director of Marketing and Communications

Email Alice Bagley

Ext. 208

Jessica Carroll

Partner Relations Manager

Email Jessica Carroll

Ext. 212

Marcus Floyd

Communications Specialist

Email Marcus Floyd

Ext. 239

Paige Taylor

Marketing Assistant

Email Paige Taylor

Ext. 227

Amanda Marisko

Event Planner

Email Amanda Marisko

Ext. 210

Kathryn Campbell

Event Services Assistant

Email Kathryn Campbell

Ext. 253

Eric Marsh

Communications Manager

Email Eric Marsh

Ext. 209

Member Services

Matt Vieson

Director of Member Services

Email Matt Vieson

Ext. 223

Henry Miller

Compliance and Ethics Specialist

Email Henry Miller

Ext. 229

Reyuna Johnson

Membership Specialist

Email Reyuna Johnson

Ext. 231

Katie Branch

Component Specialist

Email Katie Branch

Ext. 217

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