Ronald Lubelchek, MD Title: Infectious Diseases Physician Location: Chicago, Illinois Expertise: Internal Medicine Ronald Lubelchek, MD, is an infectious disease specialist in Chicago, Illinois. He currently serves as an attending physician at John H. Stroger, Jr. Hospital of Cook County, an assistant professor in the department of internal medicine at Rush University Medical Center, and the medical director of tuberculosis care for the Cook County Department of Public Health. About Health Health.com, a Dotdash Meredith Brand, is an award-winning online resource for empathetic, trustworthy, and actionable health and wellness information so you can make the best choice for your health. We reach more than 9 million readers a month. We ensure the accuracy of our content by relying on seasoned health journalists, credentialed medical professionals and thorough fact checkers. Learn more about us and our editorial process.