Fitch Ratings upgraded the rating on Prince Fredrick, Md.-based Calvert Health System's revenue bonds to "AA-" from "A."
Concurrently, Fitch assigned its "AA-" issuer default rating to the health system.
The upgrade and assignment are based on several factors, including Calvert Health System's leading market share, favorable payer mix, consistent cash flow margins and strong leverage metrics.
The outlook is stable.