one voice has the power to create change.

Imagine what we can do together.

Who is centivox?

Reliable. Relatable. Effective.

We amplify messaging that benefits local, national, and global communities. Our curated community of experts collaborates to serve our common client – the public – with reliable messaging from relatable messengers.

Our approach is simple

Greater than the sum of our parts.

Centivox is a space for experts to collaborate, share and learn from each other. Together, we create partnerships and teams that may not have intersected anywhere else to affect change that no one of us could do alone.

A Place to be heard

Elevating voices.

Centivox develops and promotes experts that are less-often heard from to inform communities that are less-often spoken to and leverages established platforms to create opportunities for fresh voices.

Meet the team

Amy Thogmartin

CEO | Founder

Cecilia Wallström

COO | Founder

Manisha Sharma, MD, FAAFP

Strategic Advisor | Founder

Isabel Wottowa

Communications and
Media Associate

Chloe Radke

Social Media
Associate

Founders Circle

These trusted messengers represent Centivox’s roots.
Their commitment to responsible messaging from the COVID-19 frontlines inspired the 2020 pro bono crisis response, AmplifyThis!.
Centivox launched from that effort and we are proud to continue to partner with these acclaimed healthcare leaders.

Amy Thogmartin

CEO | Founder

Amy founded Centivox to formalize and expand on the serendipitous pandemic-era pro bono project, AmplifyThis!. Prior to this (ad)venture, she designed and implemented public policy programs for affordable housing, girls empowerment and community development. The same motivation – unlocking opportunity to thrive – is the driver of Centivox’s vision and mission. Creative solutions-building, teaming, and cross-sector collaboration make this work exciting; learning from and with inspirational people makes it exhilarating. Amy’s roots are firmly in Central Texas and Western Oklahoma, and Brooklyn has been home with her husband Steve and three now-grown kids for 20+ years.  

Cecilia Wallström

 COO | Founder

Cecilia is an operations & organizational development professional who prior to Centivox worked in the international education & travel industry. At Centivox, Cecilia’s love for an organizational challenge, attention to detail, network building and being a stickler for spelling mistakes, all come in handy. Originally from Sweden, Cecilia was a long-term Boston resident before settling in Switzerland and these days particularly enjoys any US based colleague who is an early riser. A multilinguist at heart, in her current home country she gets to practice her many languages while also enjoying the Swiss lakes & mountains with her husband and their three kids.

Manisha Sharma, MD, FAAFP

Strategic Advisor | Founder

Dr. Sharma is a board certified family medicine physician, working at the intersection of social justice, patient care, health policy, system design and clinical innovation in healthcare delivery. She leads and provides strategic advisory support on multiple local, state, and national initiatives geared to dismantle structural racism in medicine and end health inequities. Dr. Sharma addresses these topics and more as a guest on national and local media outlets. Dr. Sharma has organized and led numerous grassroots physician campaigns through Doctors for America where she served as the National Director of Leadership Cultivation. Additionally, she is a recent graduate of the California Health Care Foundation Leadership and Innovation Fellowship, a clinical advisor for Zócalo Health, a healthcare service for Latinos by Latinos, and co-founder of Civic Health Alliance, a non-partisan coalition committed to helping peers and patients register to vote and vote safely.

Isabel Wottowa

Communications and Media Associate

Isabel Wottowa is a recent graduate of American University in Washington, DC where she double majored in Public Relations and Political Science. She has always planned to use her PR training and unrelenting consumption of news media and popular culture to communicate important policy messaging to the general public. As a Communications and Media Associate at Centivox, she gets to do just that. Isabel still lives in DC, where her love of politics, other people’s dogs and great happy hour deals have made her feel right at home for the past five years.

Chloe Radke

Social Media Associate

Chloe Radke. As a digital native, becoming a part of the industry has been an ambition of Chloe’s for many years. Working alongside the amazing team at Centivox, Chloe strives, through the powerful impact of social media, to advance the organization’s mission to provide evidence-based, data-driven messaging. Chloe is also a junior at Bentley University in Waltham, MA studying Creative Industries and Marketing, a business curriculum with arts and sciences coursework, with a focus on social media. When not working or studying, Chloe spends much of her free time at the barn riding and competing or at home in Yonkers, NY with her family and cat.