MercyOne Des Moines Medical Center is a not-for-profit Catholic health care provider. MercyOne Des Moines’ hospitals, with a ... total of 875 beds, include: MercyOne Des Moines Medical Center, MercyOne West Des Moines Medical Center, MercyOne Children's Hospital, MercyOne Centerville Medical Center, MercyOne Newton Medical Center. Founded by the Sisters of Mercy in 1893, MercyOne Des Moines is the longest continually operating hospital in Des Moines. With approximately 7,000 staff members and a medical staff of about 1,200 physicians and allied health professionals, MercyOne is one of the state’s largest employers and one of the Midwest’s largest referral centers. read more