Fitch Ratings assigned its "A" rating to New Hyde Park, N.Y.-based Northwell Health's proposed $1 billion series 2017A.
Additionally, Fitch assigned an "A" rating to Northwell Health's $1.9 billion of outstanding debt.
At the same time, Fitch placed these bonds on Rating Watch Negative.
The negative watch is a result of several factors, including Northwell Health's increased debt burden, unfavorable liquidity metrics and financial losses in its insurance division.
Fitch said the rating assignments are based on Northwell Health's strong market position and geographic diversity.