In 1956, Dr. Lee Gladstone built a clinic on Green Street in the city of McHenry. The first and second floor included an emergency room, operating room, reception areas and offices for outpatient physician care. The ground floor provided 22 beds for new born, pediatric and adult patients. A McHenry Hospital addition was soon built near the clinic on Waukegan Avenue. With the rapid growth of population, a new McHenry Hospital was built in 1984 on Route 31 and Bull Valley Road and was named Northern Illinois Medical Center.