Nielsen, Thomas

Ashley M. DiSipio, DO, is a dedicated healthcare professional located in Naperville, IL, specializing in sleep psychology within the Northwestern Medicine Regional Medical Group. With a commitment to providing compassionate care, Dr. DiSipio emphasizes active listening and patient involvement in treatment decision-making processes. Generated from the website

Northwestern Medicine is proud to have five hospitals ranked among “America’s Best,” including Northwestern Memorial Hospital, the only Illinois hospital to be ranked No. 1 for 14 straight years, by U.S. News & World Report, 2025 – 2026. We are leading the quest for better care in the Chicago area and beyond. With more than 200 locations across Chicagoland, better care and better treatments are never far from home. To learn more, visit our website.

Dr. Stanley Okon specializes in Hospital Medicine - In-patient physician who works exclusively in a hospital and is part of AMITA Health's extensive provider network, which includes more than 7,000 affiliated providers. The AMITA Health system serves communities throughout the greater Chicago area down to Kankakee, integrating 19 hospitals, more than 230 outpatient sites and the full spectrum of medical care for you and your family - from primary, immediate and emergency care to advanced cardiology, neurology and cancer treatments. We are committed to providing quality care that is open, inclusive and compassionate, delivered with dignity and empathy for all. In sickness and in health.®