Lown Institute hospital rankings for 2023. The hospital quality outcomes list ranks more than 3,600 hospitals. It combines clinical outcomes, patient safety and patient satisfaction. This is one of the easiest-to-use “best hospital” lists. The Outcomes index relies on Medicare inpatient data from 2019 to 2021 as well as some patient satisfaction and other data from 2022. Additional rankings are at this site: Equity and Value. An overall A-B-C-D rating is given to each hospital; it combines all Quality, Equity and Value scores into a “Social Responsibility” rating. Published 2023. The Lown Institute is a Washington, DC-based think tank, and a more recent addition to the hospital rankings business.