Michael Treash Announcement

Springfield, MASS. – Baystate Health has announced the appointment of Michael Treash as President of Health New England, effective October 6, 2025. Treash will report directly to Baystate Health President and CEO Peter Banko and serve as a member of President’s Council.

The appointment comes at a pivotal time as Baystate Health and Health New England deepen their integration across care coordination, physician alignment, and value-based care. Together, the organizations are advancing Baystate Health’s growth strategy, enhancing member value, and building a healthy, mission-driven future for the communities they serve.

Treash, a seasoned healthcare executive with more than three decades of leadership experience in provider-based health plans and health system integration, will oversee all operations of Health New England. His responsibilities will include strategic planning, sales, product development, actuarial services, provider relations and contracting, health services, and day-to-day operations.

“Mike brings a proven track record of operational excellence, innovation, and consumer-focused leadership,” said Peter Banko, President and CEO of Baystate Health. “At this critical moment, his vision and expertise will accelerate Health New England’s ability to grow, deliver differentiated value, and strengthen the connection between Baystate Health and Health New England. We are thrilled to welcome him into this important role.”

Treash most recently served as Chief Operating Officer and Senior Vice President at Health Alliance Plan in Detroit, where he led Operations, IT, PMO, Supply Chain, and Data Insights while developing and executing a multi-year data transformation strategy. His previous leadership roles include Vice President of Enterprise Operations at Priority Health in Grand Rapids, Interim CEO of Missouri Health Care Cooperative, COO of The Outsource Group, and Executive Vice President and COO at Mercy Health Plans in Chesterfield, MO.

He holds a bachelor’s degree in political science from Western Michigan University and a Master of Public Administration from Arizona State University.

About Baystate Health

Baystate Health, together with its health plan, Health New England, is a not-for-profit, integrated healthcare system and the largest in western Massachusetts. Serving more than 800,000 people across western New England, Baystate includes an academic medical center, children’s hospital, three community hospitals, outpatient practices, home health and hospice services, and a regional health plan. Health New England provides coverage to more than 160,000 members through commercial, Medicare Advantage, and Medicaid (MassHealth) plans. United by a mission to improve the health of the people in our communities every day, Baystate Health and Health New England deliver high-quality, compassionate care with a focus on quality, safety, value, and experience.