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
Read More
Barbara Luther, MA, MCAC, MCC
Director of Training
ADDCA Senior Leader, Assessor, & Mentor Coach
Missouri, United States
Read More
Caroline Maguire, M.Ed, ACCG, PCAC, PCC
Director of Family Training
ADDCA Senior Leader & Assessor
Family-Trained Leader
Massachusetts, United States
Read More
Tori Throckmorton, MBA, ACCG, PCAC, PCC
Assistant Director of Training
ADDCA Leader, Assessor, & Mentor Coach
Michigan, United States
Read More
Donna Addkison, MS, ACCG, PCAC, PCC
Assistant Director of Training
ADDCA Leader, Assessor, & Mentor Coach
Minnesota, United States
Read More
Roger DeWitt, MAPP, MCAC, PCC
ADDCA Senior Leader, Assessor, & Mentor Coach
New York, United States
Read More
Jay Perry, MFA, MCAC, PCC
ADDCA Senior Leader, Assessor, & Mentor Coach
Virginia, United States
Read More
Michele Toner, PhD, ACCG, PCAC, PCC
ADDCA Senior Leader, Assessor, & Mentor Coach
Family-Trained Leader
Western Australia, Australia
Read More
Dana Maher, JD, ACCG, PCAC, PCC
ADDCA Senior Leader, Assessor, & Mentor Coach
Family-Trained Leader
New Jersey, United States
Read More
Diane McLean, M.Ed, ACCG, PCAC, MCC
ADDCA Senior Leader, Assessor, & Mentor Coach
Kansas, United States
Read More
Lynn Shumaker, M.Ed, ACCG, PCAC, PCC
ADDCA Senior Leader, Assessor, & Mentor Coach
Family-Trained Leader
Pennsylvania, United States
Read More
Linda King, ACCG, PCAC, MCC
ADDCA Leader, Assessor, & Mentor Coach
Massachusetts, United States
Read More
Bethany Febus, ACCG, PCAC, PCC
ADDCA Leader, Assessor, & Mentor Coach
Family-Trained Leader
Washington, United States
Read More
Mira Weinfeld, MBA, CCC-SLP, ACCG, PCAC, PCC
ADDCA Leader, Assessor, & Mentor Coach
Family-Trained Leader
New York, United States
Read More
Jamie Blume, MPH, ACCG, PCAC, PCC
ADDCA Leader, Assessor, & Mentor Coach
Family-Trained Leader
Colorado, United States
Read More
Cathy Rashidian, ACCG, PCAC, PCC
ADDCA Leader, Assessor, & Mentor Coach
Alberta, Canada
Read More
Rosemary Hollinger, JD, ACCG, PCAC, PCC
ADDCA Leader, Assessor, & Mentor Coach
Washington, United States
Read More
Brett Weggelaar, ACCG, PCAC, PCC
ADDCA Assessor
Western Australia, Australia
Read More
Marci Rubin, MBA, MA, ACCG, PCAC, PCC
ADDCA Leader, Assessor, & Mentor Coach
New Jersey, United States
Read More
Sara Prince, M.Ed, ACCG, PCAC, PCC
ADDCA Assessor
Kansas, United States
Read More
Lois Liu, MBA, ACCG, PCAC, PCC
ADDCA Assessor
Chaoyang District, China
Read More
Andrew Macdonald, GCPA, ACCG, PCAC, PCC
ADDCA Assessor
New South Wales, Australia
Read More
Kristen Denney, ACCG, PCAC, PCC
ADDCA Assessor
Washington, United States
Read More
Mirka Frommenwiler, ACCG, PCAC, PCC
ADDCA Assessor
Ireland
Read More
Aaron Bailey, ACCG, PCAC, PCC
ADDCA Assessor
Ontario, Canada
Read More
Lori Charter, ACCG, PCAC, PCC
ADDCA Assessor
Georgia, United States
Read More