New York, NY, November 10, 2025 – Vestar Capital Partners, a leading U.S. middle-market private equity firm, announced today it has completed the sale of Quest Analytics, a cornerstone healthcare technology platform that enables the creation of compliant, cost-effective, and equitable provider networks. Details of the transaction were not disclosed.
“Under Vestar’s ownership, Quest transformed from a founder-led niche point solution to an integrated market leading platform, while increasing revenues and scaling EBITDA margins,” said Dan O’Connell, CEO and Founder of Vestar. “We are proud of the results achieved thanks to our strong partnership with management, and we believe this exit is a good outcome for all stakeholders.”
For over 20 years, Quest Analytics has partnered with health plans, health systems, regulators, and providers to deliver accurate information and ensure reliable provider networks, ultimately improving patients’ access to care. Today, the company works with the largest state and federal regulators as well as 90% of U.S. health plans.
