Groups Appoints Cooper Zelnick as Chief Executive Officer

Cooper Zelnick, CEO, Groups・ Photo Credit: Groups

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NEW YORK, September 26, 2025 (VSNewsNetwork.com) — Addiction treatment company Groups has appointed Cooper Zelnick as Chief Executive Officer.

Zelnick has spent nearly a decade with the organization, serving in multiple leadership roles including President, Chief Strategy Officer, and Executive Director. He began his tenure overseeing operations in Maine and oversaw the company’s expansion into 17 states, the development of value-based partnerships with health plans, and the refinement of its evidence-based care model.

Before joining Groups, Zelnick worked as an investor at RRE Ventures, with a focus on behavioral health and healthcare services.

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Zelnick succeeds Colleen Nicewicz, who served as CEO for the past five years. Her tenure included efforts to expand access to high-quality addiction care.

“I am honored to step into the role of CEO. Groups has proven that evidence-based addiction treatment that aligns incentives can save lives and reduce costs. I’m excited to continue this important work with our incredible team,” said Zelnick.

Board Member Thomas McLellan, a recognized expert in addiction science, treatment, and policy, expressed confidence in Zelnick’s leadership.

“Cooper is exactly the right person to lead Groups in its next stage of growth. His deep understanding of addiction and member needs informs our treatment model at every level. With unmatched expertise navigating licensing, regulatory, and contracting requirements, he is uniquely positioned to strengthen Groups’ impact and further advance the innovation and excellence our members deserve,” said McLellan.

According to the company, Zelnick’s appointment marks the next phase in its growth strategy as it continues to expand value-based addiction treatment and deliver outcomes-focused care to tens of thousands of members annually.

Groups is a national provider of outpatient treatment for substance use disorder (SUD), offering recovery programs that combine medication, group therapy, and wraparound services. The company operates physical locations and virtual care options across the United States.

For more information, visit www.joingroups.com.

Source: Groups