Monterrey, with a metro-wide population of just under four million people, is Mexico's third-largest city and is located just 140 miles (225 km) south of the U.S. border; it is home to 4 JCI (Joint Commission International)-accredited hospitals. It is one of the nearest, fastest, cheapest international medical tourism destinations for Americans and Canadians. Monterrey also contains the largest concentration of first-rate, world-class medical facilities in northern Mexico, a byproduct of the city's size and affluence. It's Mexico's wealthiest as well as safest city. Monterrey is the capital of the northern Mexican state of Nuevo Leon, thus a center for government activities.(www.visitmonterrey.travel)

The appeal of Monterrey then is based on: convenience of location, presence of highly developed local medical industry, presence of large numbers of English-speaking physicians, many of whom trained or previously worked in the United States in their specialties.
US. Cities near Monterrey by plane
San Antonio, Tx 1 Hr
Houston, Tx 1 Hr 10 min
Dallas, Tx 1 Hr 35 min
Los Angeles, Cal 3 Hrs 10 min
Miami, FL 3 Hrs
Mexican Cities near Monterrey by plane
Mexico, City 1 Hr 5 min
Guadalajara 1 Hr 15 min
Cancun 2 Hr 30 min
Tijuana 3 Hrs