Where can I find a MBA program for healthcare quality assurance in U.S, all that I can find is the healthcare management MBA and the healthcare administration MBA.
Plz I need directions , cuz I'm lost and can't find one

You might want to check out this list of top MBA programs for a career in healthcare:

http://www.find-mba.com/specializations/15/health-care-pharmaceuticals-biotechnology

There are some US programs, such as Columbia, Boston University, Rutgers, Vanderbilt/Owen, Harvard, and some others.

Otherwise, you might consider an MBA/MHA (masters in health administration) dual-degree program - I know Cornell offers a program like this.

There are lots of graduate programmes in healthcare quality assurance, but they are master of science degrees not MBAs. For example:
- http://www.hqrs.queensu.ca/
- http://www.csudh.edu/msqa/default.html

The MBA is a degree in general management: even if there are specialisations the core of the degree is general business management. That core is not needed for healthcare quality assurance.