S&P Global Ratings upgraded its long-term rating on Wausau, Wis.-based Aspirus from "A+" to "AA-."
S&P also raised its underlying rating for the system's variable-rate demand bonds from "A+" to "AA-."
The ratings reflect Aspirus' sound financial profile, with good debt and liquidity metrics even considering recent capital projects, along with the health system's growth in recent years.
The rating outlook is stable.