Contemporary medical tourism for elective diagnostic, complex or aesthetic medical and surgical procedures to countries that are distant from a client's home nation currently accounts for a 4 billion dollar share of the 1 trillion dollars spent worldwide on diagnostic, medical and surgical health care. This number is projected to reach 12 billion within the next two years and to grow exponentially thereafter as more and varied players enter the arena and as quality and accreditation measures grow in depth, scope and acceptance.  There are many reasons for the surge in this industry not the least of which are government assisted offerings in target destinations, well qualified and internationally educated and trained medical, surgical and nursing teams, first rate customer service, and the ability of foreigners to receive highly complex medical and surgical care that are not available at all or, if they are available, at a fraction of the cost of their home countries and virtually at a moment's notice.  The authors will examine this growing industry in greater detail and will offer specifics pertaining the most commonly sought medical, diagnostic and surgical procedures in four major medical tourism destinations: USA, India, Thailand and Singapore.