Interventional cardiology involves the use of imaging and diagnostic tools to monitor coronary disorders in heart patients. A cardiologist is a physician who treats disorders of the heart. An interventional cardiologist evaluates blood flow and blood pressure in the heart valves using imaging tools and equipment and other diagnostic techniques. These tests and monitoring devices, sometimes combined with medication, help the cardiologist treat patients with heart valve disorders, coronary artery disease, endocarditis, and other heart conditions.

Doctor density varies by specialty and location. Illinois has 329 practicing interventional cardiologists. Broken out by city, interventional cardiology doctor density in Alsip is 1, in Alton is 7, in Aurora is 6, in Bannockburn is 3, in Barrington is 12, in Belleville is 4, in Berwyn is 9, in Bloomingdale is 3, in Bloomington is 11, in Blue Island is 9, in Bolingbrook is 1, in Breese is 1, in Burbank is 1, in Carbondale is 1, in Champaign is 2, in Chester is 2, in Chicago is 75, in Chicago Heights is 4, in Clinton is 2, in Crystal Lake is 5, in Decatur is 2, in Dekalb is 4, in Des Plaines is 3, in Du Quoin is 1, in Edwardsville is 5, in Effingham is 10, in Elgin is 8, in Elk Grove Village is 9, in Elmhurst is 6, in Elmwood Park is 2, in Evanston is 10, in Evergreen Park is 1, in Fairfield is 1, in Fairview Heights is 1, in Frankfort is 1, in Freeport is 1, in Galesburg is 2, in Geneseo is 2, in Geneva is 3, in Gillespie is 1, in Glenview is 3, in Granite City is 4, in Grayslake is 2, in Gurnee is 5, in Harvey is 3, in Hazel Crest is 4, in Highland is 1, in Highland Park is 3, in Hillsboro is 2, in Hinsdale is 15, in Hoffman Estates is 10, in Huntley is 2, in Joliet is 9, in Kankakee is 4, in La Grange Highlands is 1, in Libertyville is 3, in Lincoln is 1, in Lombard is 6, in Loves Park is 1, in Marion is 4, in Martinsville is 1, in Maywood is 6, in Mchenry is 1, in Mokena is 7, in Moline is 6, in Morris is 6, in Mount Prospect is 3, in Naperville is 14, in Normal is 1, in Oak Brook is 2, in Oak Lawn is 15, in Oakbrook Terrace is 1, in Olney is 1, in Olympia Fields is 10, in Palos Heights is 10, in Palos Park is 7, in Paris is 2, in Park Ridge is 9, in Peoria is 12, in Pinckneyville is 1, in Pontiac is 1, in Quincy is 3, in Rock Island is 1, in Rockford is 17, in Sandwich is 1, in Schaumburg is 4, in Schiller Park is 1, in Silvis is 9, in Skokie is 12, in Springfield is 19, in Sterling is 1, in Sycamore is 1, in Taylorville is 3, in Tinley Park is 3, in Urbana is 4, in Waterloo is 1, in West Frankfort is 1, in Winfield is 10, in Wood Dale is 1, and in Woodstock is 2.

Most people think that Chicago, because of its size and popularity, is Illinois’ capital city, but that distinction belongs to Springfield, home of the Abraham Lincoln Museum. Illinois has hundreds of museums, numerous yearly art and ethnic festivals, a lakeshore bordering Lake Michigan, and the many national forests and parks that offers visitors camping, horseback riding, biking, kayaking, and fishing. Chicago is home to the Sears Tower, the Shedd Aquarium, the Art Institute of Chicago, the Adler Planetarium, the Museum of Science and Industry, and other cultural opportunities and restaurants in the Navy Pier area.

According to 2005 Census estimates, Illinois has a population of 12,763,371. Of this population, 3,172,677 are under the age of 18 and 1,523,937 are at or above the age of 65.