Managed care organizations & Benchmarks in Health care

Managed care organizations & Benchmarks in Health care
Part 1:
In your own words, describe and compare the following (one paragraph each):
Preferred Provider Organization
Point of Service Plans
HMOs
Part 2:
What do you know about benchmarks in health care?
Part 3: (from article attached)
What would use suggest to fix the issues raised in the article about health records?