CLEVELAND, Ohio — Summa Health CEO Dr. Cliff Deveny announced Wednesday that he will leave his role as CEO in the new year. Health Assurance Transformation Co. president Daryl Tol will become acting president and CEO until a new leader is named.

Health Assurance Transformation Co. -- known as HATCo -- is the for-profit company that now owns Akron-based Summa.

Deveny will stay with Summa as a strategic advisor and “CEO Emeritus” effective Jan. 1. He said he will continue to be actively engaged in the organization through 2026, according to his email announcement.

“Daryl (Tol) will work closely with our leadership team and a strategy council of Summa leaders to ensure continuity, stability, and focus throughout this process,” Deveny said in an email sent to Summa medical staff, boards and

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