Dr. John David Siegfried, MD

John Siegfried specializes in gastroenterology and internal medicine, bringing five decades of medical expertise to patient care. They earned their medical degree from the University of Illinois College of Medicine and completed residency training at the University of Illinois Hospital & Health Sciences System. With 51 years of experience in practice, John Siegfried provides comprehensive care in both digestive health and general internal medicine. They are fluent in English and Spanish.

John Siegfried practices at Advocate Dreyer Medical Clinic in Aurora, Illinois, and maintains hospital privileges at Rush Copley Medical Center. Their extensive experience allows them to address a wide range of health concerns with a focus on digestive system disorders and comprehensive adult medicine. Patients consistently recognize the quality of care provided, giving John Siegfried an average rating of 5.0 out of 5 stars.