Committed to the Cause

Profile Pic.png



Tom Scharstein is an entrepreneur and person who stutters from South Florida, USA.  Involved in stuttering support for over 23 years, he served on the NSA Board of Directors.  Adult Chapters experienced an unparalleled period of growth with his oversight.  The dream of bringing together world support group leaders began to emerge.  Connect.  Share information.  Get more done.  August 2020 saw the birth of the WSN with one main concept, "Better Together."

TKH profile pic.jpg


Program Development Chair & Vice Chair

Tricia Hedinger, MS, CCC-SLP, BCS-F is a clinical associate professor at the University of Tennessee Health Science Center in Knoxville, TN.  She is a Board Certified Specialist in Fluency Disorders and has been a support group leader since 2013.  Ms. Hedinger has published multiple articles related to stuttering, presented at national & international conferences, co-authored a book titled "Bullyblossom: A Tale of Overcoming Bullies & Embracing Stuttering to Live a Life of Achievement" and focused on the anti-bully movement in schools.  She is the host of the "Stutter Stories" podcast.



Online Event Chair &

For numerous years, Marvin Wiley Jr. struggled with his stutter, which led him to avoid social interactions.  At the age of 23, he birthed a belief that he could work towards developing himself into a more confident speaker. Inspired from his college public speaking course, he became a Toastmaster in 2013. He strives to bring the stuttering world together. We are all in it together.  Marvin Wiley Jr. is is the creator & host of Stutter Block Party, a virtual hangout with a mix of breakout rooms designed specifically for people who stutter.  He also serves as a Regional Chapter Coordinator for the NSA.  Some of Marvin's other passions are video production and golf.



Far East Support Group Chair & 

Jia was born and raised in China.  She has been a language teacher (English & Mandarin Chinese) who has taught in China, the UK and the USA.  Jia's passion for helping others to communicate over the last 10 years has led her to become open about her own experiences of stuttering in various cultures.  Jia is an active member of the NSA and has served as a regional chapter coordinator.  She is the former host for StutterSocial, and was featured on StutterTalk podcast on several occasions.  Jia is also a founder of a Chinese podcast and hosted online support sessions for a Chinese community.  Jia is currently a graduate student in communicative science and disorders at Michigan State University.



Chair of Research & Development

Gerald Maguire, MD (Jerry) is professor and chair in Psychiatry and Neuroscience at the University of California, Riverside School of Medicine.  Dr. Maguire is a Distinguished Fellow of the American Psychiatric Association (DFAPA).  He has been listed in the "Best Doctors in America every year beginning in 2008.  As a PWS, Dr. Maguire set forth on his mission to become a physician to understand how best to assist the stuttering community. He served as Chair of the National Stuttering Association and Vice Chair of the International Stuttering Association.  Dr. Maguire presented at numerous stuttering support organizations across the world.  He amplifies the voice of his fellow persons who stutter through advocacy, research and education.



Support Group Leader Engagement Chair

Keisuke was born in Nagoya, Japan and now lives in Osaka.  He leads "GENYUKAI,"  a Japanese stuttering self-help group.  His activity with the group is his life's work and has transformed his relationship with stuttering.  Keisuke is a mental health social worker with a beloved wife and daughter.



International Advocacy Chair

Nathan graduated summa cum laude with honors from UCLA in June, where he received a B.S in Biology and B.A in Political Science. He is a Junior-elect to Phi Beta Kappa and a Fulbright Scholar. Nathan is founder and CEO of Stuttering Scholarship Alliance, a non-profit organization that tackles a critical issue in the field of speech therapy regarding its lack of access to low income communities. He also serves on leadership teams for several international speech disability awareness organizations. Nathan has conducted both cell biology and public policy research at UCLA David Geffen School of Medicine and the Luskin School of Public Affairs, where he published his work in top journals. As the senior policy intern for the City of Los Angeles Department on Disability, Nathan developed transformative public policy initiatives that created jobs for the thousands of unemployed or homeless persons with disabilities in Los Angeles. Nathan aspires to a career as a physician-researcher-policymaker focusing on improving the quality of care and reducing the disparities for disabled persons in healthcare systems. He will attend medical school next year to pursue a medical degree combined with a Master's in Business Administration from Stanford's Graduate School of Business.



She is deciding how she wants to make a big impact... stay tuned!!

Sigríður, originally from Iceland and currently residing in Kiruna, Northern Sweden, will be graduating with a masters in adult education in 2021. She is an avid fighter for human rights, has a fondness for languages and is interested in different cultures, views, and politics.  Sigríður has served as the chair of Málbjörg, the Icelandic Stuttering Association for the last few years. In 2019 she joined the International Stuttering Association’s board of directors. Sigríður is currently involved in Swedish and transnational projects, revolving around education, awareness and accessibility for people who stutter. Sigridur has found peer to peer meetings to be at the heart of any stuttering association. She believes that providing support for peer-to-peer meetings, will help stuttering associations grow and vice versa. An open and supportive community is key.

Screen Shot 2021-02-24 at 2.05.55 PM.png


Chair of Central & South America

Jhoan Stiven Gallego Bermúdez, was born on September 11, 1991 in the city of Cali in the country of Colombia in South America. Graduated as a Fonoaudiólogo (Speech Language Pathologist) in 2019. Diploma in Attention and Prevention of Stuttering with the Ibero-American Association of Stuttering, trained in disorders of Fluency with the Argentine Association of Stuttering. Leader of the support group for people who stutter in Colombia called Libera Tu Speech. Founding President of the Colombian Foundation of Stuttering. Person who stutters, passionate about stuttering, recognizing it as his life mission, thus finding the why of stuttering in his life; to disseminate, guide, investigate, promote respect and inclusion towards the person who stutters and improve communication quality.



Chairman of the Youth Committee

Sam Wiggins lives at home with his mom, big sister and 2 cats in the UK.  He enjoys acting, modeling & sports, such as archery, cricket, darts and dodgeball.  He has had a stammer since he was about 3 years old.  Sam has been in and out of speech therapy over the years and learned some useful techniques such as slowing down his speech and sliding into words.  However, Sam has learned that having a stammer is OKAY!  Everyone is different; the world would be a boring place if everyone were the same.  Sam embraced his stammer and never lets it hold him back.  He wants to educate people about stammering and help other kids to find their confidence!