Mr. Kassis serves as operations executive for Adventist Health Clear Lake, a 25-bed critical access hospital in Lake County, where he also provides operational leadership for more than 20 healthcare clinics across Lake, Butte and Tehama counties in Northern California. With more than 38 years of progressive healthcare leadership experience, Mr. Kassis has held executive roles across the continuum of care, including CEO at Providence Santa Rosa (Calif.) Memorial Hospital and president and CEO at Mercy Medical Center in Merced, Calif. He began his career as a respiratory therapist, a clinical foundation that continues to inform his executive decision-making in patient safety and provider engagement. Under his leadership, Adventist Health Clear Lake has earned a CMS 5-star rating, a Cal Hospital Compare “Patient Safety Honor Roll” designation and recognition as a U.S. News & World Report “high performing” hospital for pneumonia and chronic obstructive pulmonary disease.
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Becker's Recognition
Chuck Kassishas been named a Becker's honoree on the lists below.
2026 Winner

Executives
146 Rural Hospital and Health System Presidents and CEOs to Know
CEORural & Critical Access
