Miami Valley Hospital

Miami Valley Hospital opened as the Protestant Deaconess Hospital in 1890. In 1895, the hospital treated patients for an average cost of 74 cents per patient per day. The hospital charged five dollars a week for a private room and whatever the patient could afford in the public wards. Dayton's first emergency room was opened beneath the main surgery floor in 1912. MVH also established an outpatient clinic in 1913 in response to the aftermath of the 1913 flood. From the 1920s to the 1950s, the hospital saw the most advancements in expansion and additions. As the hospital made advancements in care, in 1952, MVH opened the Radioisotope Laboratory, a forerunner to nuclear medicine. MVH was the first non-university hospital in Ohio to be authorized by the Atomic Energy Commission to use radioactive materials in research and patient care. In 1983, MVH's first air ambulance, CareFlight, was put into service, which made rapid emergency transport available within a 75-mile (121 km) radius. By its second year, CareFlight was averaging more than one transport every day. CareFlight operates three helicopters, based at the hospital main campus in Dayton, Lebanon-Warren County Airport, and Grimes Field in Urbana, Ohio, and Darke County Airport in Versailles, Ohio.

In 2010, the Neurological Institute at Miami Valley Hospital was established. The neurological institute is in partnership with Premier Health Partners and Wright State University. The Center focuses on the treatment, diagnosis, and research of neurological disorders. In addition, Miami Valley Hospital completed a 484,000-square-foot (45,000 m2), 12-story tower, focusing on cardiac and orthopedic care. The expansion allowed for 98 percent of the hospital to contain all private patient rooms and for the hospital itself to grow to almost 3 million square feet (280×10^3 m2).

On June 2, 2022, a shooting occurred at the hospital, when Brian Booth, a 30-year-old inmate at the county jail, fatally shot Darrell Holderman, a 78-year-old security guard. Booth then reportedly pointed his gun at others in the hospital, before shooting himself dead in the parking lot.

Other hospitals within the Premier Health Partners network are Atrium Medical Center in Warren County, Upper Valley Medical Center in Miami County, Miami Valley Hospital North in Englewood, Ohio, and Miami Valley Hospital South in Centerville, Ohio.