Our Faculty

ADDCA faculty represent a distinguished community of highly experienced, professionally credentialed coaches committed to excellence in coaching and coach education. Their work reflects strong professional standards, ethical practice, and dedication to developing future coaches.

Faculty members have completed rigorous professional and organizational requirements, including earning ADDCA’s Advanced Certification (ACCG), holding at minimum a Professional Certified Coach (PCC) credential from the International Coaching Federation (ICF), and maintaining a Professional Certified ADHD Coach (PCAC) credential from the Professional Association for ADHD Coaches (PAAC).

ADDCA leaders have additionally completed ICF PCC Marker Training, reflecting specialized expertise in evaluating coaching competencies and supporting coach development.

Our faculty bring extensive real-world coaching experience, refined teaching skills, and a genuine passion for mentoring the next generation of coaches.

Coaches who aspire to faculty roles may view this path as a meaningful professional milestone. Faculty appointments follow a thoughtful vetting process to ensure alignment with ADDCA’s standards, values, and commitment to excellence.
 


David Giwerc, MCAC, MCC

Founder & President

ADDCA Senior Leader & Assessor

New York, United States

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Barbara Luther, MA, MCAC, MCC

Director of Training

ADDCA Senior Leader, Assessor, & Mentor Coach

Missouri, United States

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Caroline Maguire, M.Ed, ACCG, PCAC, PCC

Director of Family Training

ADDCA Senior Leader & Assessor
Family-Trained Leader

Massachusetts, United States

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Tori Throckmorton, MBA, ACCG, PCAC, PCC

Assistant Director of Training

ADDCA Leader, Assessor, & Mentor Coach

Michigan, United States

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Donna Addkison, MS, ACCG, PCAC, PCC

Assistant Director of Training

ADDCA Leader, Assessor, & Mentor Coach

Minnesota, United States

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Roger DeWitt, MAPP, MCAC, PCC

ADDCA Senior Leader, Assessor, & Mentor Coach

New York, United States

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Jay Perry, MFA, MCAC, PCC

ADDCA Senior Leader, Assessor, & Mentor Coach

Virginia, United States

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Michele Toner, PhD, ACCG, PCAC, PCC

ADDCA Senior Leader, Assessor, & Mentor Coach
Family-Trained Leader

Western Australia, Australia

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Dana Maher, JD, ACCG, PCAC, PCC

ADDCA Senior Leader, Assessor, & Mentor Coach
Family-Trained Leader

New Jersey, United States

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Diane McLean, M.Ed, ACCG, PCAC, MCC

ADDCA Senior Leader, Assessor, & Mentor Coach

Kansas, United States

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Lynn Shumaker, M.Ed, ACCG, PCAC, PCC

ADDCA Senior Leader, Assessor, & Mentor Coach
Family-Trained Leader

Pennsylvania, United States

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Linda King, ACCG, PCAC, MCC

ADDCA Leader, Assessor, & Mentor Coach

Massachusetts, United States

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Bethany Febus, ACCG, PCAC, PCC

ADDCA Leader, Assessor, & Mentor Coach
Family-Trained Leader

Washington, United States

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Mira Weinfeld, MBA, CCC-SLP, ACCG, PCAC, PCC

ADDCA Leader, Assessor, & Mentor Coach
Family-Trained Leader

New York, United States

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Jamie Blume, MPH, ACCG, PCAC, PCC

ADDCA Leader, Assessor, & Mentor Coach
Family-Trained Leader

Colorado, United States

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Cathy Rashidian, ACCG, PCAC, PCC

ADDCA Leader, Assessor, & Mentor Coach

Alberta, Canada

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Rosemary Hollinger, JD, ACCG, PCAC, PCC

ADDCA Leader, Assessor, & Mentor Coach

Washington, United States

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Brett Weggelaar, ACCG, PCAC, PCC

ADDCA Assessor

Western Australia, Australia

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Marci Rubin, MBA, MA, ACCG, PCAC, PCC

ADDCA Leader, Assessor, & Mentor Coach

New Jersey, United States

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Sara Prince, M.Ed, ACCG, PCAC, PCC

ADDCA Assessor

Kansas, United States

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Lois Liu, MBA, ACCG, PCAC, PCC

ADDCA Assessor

Chaoyang District, China

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Andrew Macdonald, GCPA, ACCG, PCAC, PCC

ADDCA Assessor

New South Wales, Australia

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Kristen Denney, ACCG, PCAC, PCC

ADDCA Assessor

Washington, United States

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Mirka Frommenwiler, ACCG, PCAC, PCC

ADDCA Assessor

Ireland

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Aaron Bailey, ACCG, PCAC, PCC

ADDCA Assessor

Ontario, Canada

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Lori Charter, ACCG, PCAC, PCC

ADDCA Assessor

Georgia, United States

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