Opioid addiction treatment that works. Together.

Meet Our Leadership


Tim O’Brien, Chief Executive Officer

“I am honored to lead a company with a compelling mission to combat the opioid crisis and long-term prospects to expand its reach and services. The most important thing is that we stay true to our mission and keep our members at the center of our focus.”

Tim is a seasoned technology and services executive with proven expertise growing and scaling fast-growing companies. He served as Chief Marketing and Commercial Operations Officer at athenahealth where he was responsible for developing annual GTM strategy, service positioning, lead generation, channel partnerships, inside sales, sales enablement and all commercial operations. Previously, he held senior positions for former Massachusetts Governors Mitt Romney, Paul Cellucci, and Jane Swift. Tim began his career at Arthur Andersen LLP. He received his BA in finance from The Catholic University of America and his MBA from Babson College.


Colleen Nicewicz, Chief Operating Officer

“I was motivated to join Groups Recover Together because I believe in the idea of providing access to those who need it most.”

Prior to joining Groups Recover Together, Colleen was Vice President, Transformation and Business Operations at athenahealth where she was responsible for a number of corporate initiatives including the sale of athenahealth in 2018. She holds an MBA from Massachusetts Institute of Technology and a B.S. from Babson College.


Kevin Holst, Chief Commercial Officer

“Nearly everyone you talk to about this epidemic has someone in their social network who has been impacted by addiction. Our model helps people suffering with OUD in a way traditional models have failed. One of the most impactful things that our clinical teams do is help our members visualize a life beyond addiction. Watching this transformation take place in our groups is incredibly inspiring.”

Kevin brings over 30 years of healthcare experience to Groups Recover Together, a majority of this spent with disruptive organizations focused on driving ROI in the payer and provider segments. Most recently, Kevin served as vice president of enterprise strategy at athenahealth, a provider of cloud-based practice management, electronic health record and population health services. He has extensive experience in disease and population management, and has worked on several business models focusing on Medicare risk.

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Josh Willeford, Chief Financial Officer

“I love our mission, our members, our people, and our culture. Those elements of our business are both what brought me here and what keeps me here. I love the feeling of waking up each morning knowing that what I’m doing will in some small way help one of our members get their family back, get their job back, and get their life back.”

Josh serves as Chief Financial Officer with responsibility for accounting and finance across markets. Prior to joining Groups Recover Together, Josh was Vice President at Optum – Provider Advisory Services where he led consulting engagements designed to provide a holistic view of the integrated care delivery system by providing clients with financial analysis and modeling, budgeting and forecasting, patient access improvement initiatives, and physician compensation plan redesign. Josh previously was a VP at Advisory Board Company, finance director at magazines.com, and an accounting manager at Surgis, Inc. He holds a MAcc from the University of Tennessee in Knoxville and a B.S. from Lipscomb University.

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Joy Sun Cooper, Vice President of Strategy

“Groups Recover Together exists to recognize the lived experiences of people struggling with opioids, who so often are on the margins of society. It is a privilege to work alongside our members to help them recover, find dignity, and get their lives back.”

Before co-founding Groups Recover Together, Joy was Chief Operating Officer at GiveDirectly, a first-of-its-kind nonprofit that pioneered a new approach to international aid. Joy previously was a manager at McKinsey & Company in the healthcare and agriculture practices, and was Director of Operations at the Clinton Health Access Initiative, where she helped design and implement large-scale HIV treatment programs. She holds an MBA from Stanford Graduate School of Business and a B.S. from Georgetown University.

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Dr. Jacob “Gus” Crothers, MD, National Medical Director

“I came to Groups Recover Together because I loved the mission and the model of care delivery. The treatment model is high quality, cost effective, and reaches individuals who have historically been shut out of the medical system. At its core, our mission is one of social justice, and that really speaks to me. This is a rapidly evolving field of medicine and I love that Groups is at the forefront of innovation.”

Dr. Crothers completed medical school at Tufts University School of Medicine and residency training at Tufts University Family Residency at Cambridge Health Alliance. While there he designed and implemented a resident-led group visit model for treatment of opioid use disorder (OUD). The program continues to serve as a national model for integrating addiction medicine education into residency training. Following residency, he pursued his Addiction Medicine board certification at the APT Foundation in New Haven Connecticut, a Yale-affiliated organization where many of the original studies of Suboxone were completed. While continuing to practice part-time addiction medicine, Dr. Crothers served as Medical Director of Grand Rounds, where he scaled their clinical products to over 5 million covered lives in his 5 years of tenure.

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Lea McMahon, Ed.D, LPC, Director of Quality & Compliance

“I feel the work we are performing is helping to redefine the addiction space and serves as a testament that lives can be saved.”

Lea is a Licensed Professional Counselor with a doctoral degree in Organizational Leadership, and has worked in the addiction and mental health field since 2002. She has worked in a variety of settings including residential, outpatient, and home-based programs. Lea transitioned into the compliance and quality sector of behavioral health treatment in 2011 in order to achieve her goal of helping to improve the overall treatment landscape for those suffering from addictive disorders. Groups Recover Together was the perfect place for her to achieve this goal due to the innovative approach to treatment and prevailing focus on treating the underserved in a dignified and respectful manner.

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