One of the biggest challenges for new healthcare managers/directors

One of the biggest challenges for new healthcare managers/directors to understand is the payer source of the revenue side of their budgets.  Where does this money come from?  How is the plan, no matter the type administered?  Who is the "gatekeeper" of care for the beneficiary?  What are the types of insurer programs- underneath the alphabet soup of payers?  (PPO, HMO, POS etc.)

In an essay:

1.  Describe the primary strengths and advantages, and weaknesses and disadvantages, of each type of managed care plan.  

2.  Describe the impact of PPACA-Obama Care on the managed care process.  This will require a little research, make sure you consider how this will impact Medicare and Medicaid, along with Commercial insurance carriers.

Minimum of one page; single spaced-essay.  

MLA or APA format references! 1 page and a half