Moody's Investors Service has affirmed the "Aa3" and "Aa3/VMIG 1" ratings on Dayton, Ohio-based Miami Valley Hospital's revenue bonds, affecting approximately $289 million.
The "Aa3" rating affirmation is based on several factors, including the good investment position of MedAmerica Health Systems, of which MVH accounts for 90 percent of assets and operating revenues.
The outlook remains negative, reflecting the diverging operating margins between MedAmerica and Premier Health Partners, whose flagship hospital is MVH, in fiscal year 2014 and interim FY 2015.