Holy Cross Health | 15,057 followers on LinkedIn. Holy Cross Health is a Catholic, not-for-profit health system based in Montgomery County, Md., that serves more than 200,000 patients each year through a full range of inpatient, outpatient and innovative community-based services, with the mission to be the most trusted health care provider in the area. Holy Cross Hospital is one of the largest hospitals in Maryland. Holy Cross Germantown Hospital is the first new hospital in Montgomery County in 35 years.