Board Members & Leadership

Arbor Circle is proud to have a team of experienced and dedicated leaders who are passionate about our mission. Our leadership team brings a wealth of knowledge and expertise to their roles, ensuring that Arbor Circle is able to deliver the highest quality programs and services. Learn more about our leadership team and our accomplished Board of Directors, who provide strategic guidance and oversight.

arbor circle board of directors

Mark Nettleton
Board Chair

Mika Meyers PLC

Judy Freeman
Vice Chair

Education Consulting Group

Kelley Root

BHS Insurance

Brett Karhoff

Hungerford Nichols CPAs + Advisors

Pujita Sieplinga
Member at Large

PNC Bank

Dr. Patricia Farrell-Cole

Van Andel Institute

Regina Hill

RRP Marketing

Sonya Hughes

Inclusive Outcomes LLC

Sue Mason

BHS Insurance

Mandice McAllister

Warner Norcross + Judd LLP

Carlos Pava

Voices for Health

Melina Sinigos


Elliot Talen


Gwen Thomas

Corewell Health

Dr. B. Donta Truss

Grand Valley State University

arbor circle Leadership

Kristin Gietzen

President + Chief Executive Officer

Susan Sheppard

Vice President + Chief Operating Officer

Marie Brill

Chief Finance Officer

Enid Gaddis

Director of Equity + Inclusion

Cathy Cardosa

Human Resources Director

Leah Walton

Performance Improvement Director

Taylor Greenfield

Director of Development

Janelle Burden Hill

Director of Community Engagement

Monique Carter

Program Director, Youth Development Services

Susan Chang

Program Director, Early Childhood Services

Emmy Ellis

Program Director, Outpatient Services

Leigh Moerdyke

Program Director, Prevention & Advocacy Services

Carrie Newberg

Program Director, Family Based Services

Chelsea Tucker

Program Director, Child Welfare Services

Cathy Worthem

Program Director, Community Based Recovery Services

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