CHI Mercy Health has been a part of the Valley City community since 1928 when it was founded by the Sisters of Mercy. Their vision was to build healthier communities through a healing ministry. Over the years we've progressed to meet the needs of the community. Whether it's a routine cataract surgery or colon cancer screening or an unexpected broken arm, we're here for you - just down the road. CHI Mercy Health of Valley City is part of Catholic Health Initiatives (CHI): the third largest Catholic, not-for-profit health care system in the country. CHI operates hospitals, long-term care facilities, assisted living facilities and residential units in 19 states.