What is the phone number for mercy hospital? Phone Number of Mercy Hospital Oklahoma City is +1 405-755-1515 . Mercy Hospital is the "American Nurses Credentialing Center certified hospital".What is mercy hospital address? Mercy Medical Center Address and Contact Number. Mercy Medical Center Contact Phone Number is : (515)2473121. and Address is 1111 6th Avenue, Des Moines, Iowa 50314 United States. Mercy Medical Center is a non-profit, Roman Catholic Hospital located in Des Moines, Iowa, United States.Where is mercy hospital in missouri? Mercy Hospital was founded by the Sisters of Mercy in 1871 as a 25-bed hospital in a school building. In 1963, the current location of Mercy Hospital was founded in Creve Coeur, Missouri.