About us

Dr. Ronald M. Tilsen is a board-certified specialist in internal medicine who leads the UCI Health Executive Health Program. He believes in building long-lasting partnerships with his patients to help them achieve their personal health goals.

Tilsen earned his medical degree at the University of Wisconsin School of Medicine and Public Health in Madison. He completed residency training in internal medicine at Martin Luther King Jr. Community Hospital in Los Angeles. He previously served as chair of internal medicine at a local medical center and member of its executive committee.

A longtime provider of executive and concierge healthcare services in Orange County, Tilsen strives to detect medical issues early, starting by opening a conversation with each patient to identify their medical concerns and lifestyle. That is followed by an evidence-based assessment of the patient’s physical and emotional health. Next, he works with each person to develop a comprehensive care plan designed to empower them to improve their health and prevent disease now and in the future.