Meet Dr. Nikolas Antoniou

Dr. Nikolas Antoniou is a board-certified Family Medicine physician based in the Chicago metropolitan area with more than 30 years of experience in outpatient primary care. A lifelong Chicagoland native, Dr. Antoniou has dedicated his career to delivering compassionate, patient-centered care across a wide range of conditions including essential hypertension, type 2 diabetes, and metabolic health.

Dr. Antoniou’s clinical philosophy centers on accessibility and responsiveness. He is known among his patients for being available seven days a week and for taking the time to listen, respond promptly, and treat each person as an individual rather than a chart. One patient review captures it simply: “He is so responsive, kind, and listens to his patients.”

Beyond managing chronic disease, Dr. Antoniou brings a strong interest in nutrition, weight management, and athletic performance to his practice. He works with patients who want to optimize their health, build strength, and improve their long-term physical function, not just manage illness after the fact.

With three decades of experience in Family Medicine, Dr. Antoniou combines deep clinical knowledge with a genuine commitment to his patients’ wellbeing. He practices at locations in the northern Chicago suburbs, serving communities in Lake and McHenry counties.