Number of catholic hospitals in North America?

Answer 1

There are now more than four hundred Catholic hospitals in the United States which care for about half a million patients annually.
http://www.newadvent.org/cathen/07480a.htm

Answer 2

There are over 600 Catholic hospitals in North America, serving communities across the United States, Canada, and Mexico. These hospitals adhere to the ethical and religious directives of the Catholic Church in their operations and patient care.