[5] Many of New York Medical College's faculty provide patient care, teach, and conduct research at the adjacent campus.

[7][8] Westchester County Health Care Corporation is guided by an 18-member board of directors, many of whom are appointed by the New York State Governor.

[10] Originally purchased in 1915, the site which would eventually become Westchester Medical Center was first used as a United States Army hospital during World War I.

[11] In the 1920s and 1930s, Grasslands Hospital specialized in treating adults and children with tuberculosis, polio, scarlet fever, and diphtheria and later became known for its cardiovascular services and became one of the first public institutions to establish a renal dialysis unit.

On May 20, 2015, WMC announced that it would become the majority corporate partner in the Bon Secours Charity Health System, taking on active management of its three hospitals in Rockland and Orange counties and ancillary services.

The network has 1,900 patient beds in 10 hospitals on 8 campuses, spanning 6,200 square miles in the lower and mid-Hudson Valley of New York.