Hospital Information: Outpatient Cost to Charge Ratio - History MEMORIAL HOSP SALEM CNTY Click here to download this table. Ratio Effective Date 006.43% 1/1/2019 006.25% 1/1/2018 006.09% 1/1/2017 005.93% 2/1/2016 006.29% 1/1/2016 006.58% 1/1/2015 006.39% 12/4/2014 006.64% 4/5/2014 006.91% 1/1/2014