Driving Directions...
I was able to use MapQuest to get driving directions from San Antonio Texas to Monterrey Mexico. Found out it would take over 6 hours and won't save money from flying straight there.
However, MapQuest did work for me.
The hospital also has a website and a map. I found it by using the "contact us" at the http://www.almater.com website. Try: http://www.almater.com/ENGLISH/contactenos.htm