S&P Global Ratings assigned an "AA-" long-term rating to Milwaukee-based Froedtert Health's $247.12 million of series 2017A fixed-rate debt.
The ratings agency also affirmed the "AA-" rating on the health system's existing long-term debt.
"Froedtert has maintained its strong enterprise characteristics, highlighted by an improving market share in a competitive service area, as well as its financial strength during a period of heightened industry change and capital spending, producing key financial metrics that we think are very healthy at the existing rating level and will be maintained over the near term," said S&P analyst Kevin Holloran.
The outlook is positive, reflecting S&P Global Ratings' expectation Froedtert Health's overall financial profile will remain consistent over the next one to two years.
The rating only applies to Froedtert Health and is independent of the health system's association with the Medical College of Wisconsin in Milwaukee.