2. Preferred Provider Organization (PPO), contracts with physicians and facilities to perform services for PPO members.
3. Point of Service (POS), plans encourage, but do not require, members to choose a primary care physician.
Some are private, such as, Blue Cross Blue Shield and some are government sponsored, such as, Medicare, Medicaid, Tricare and CHAMPVA.
A few descriptions include:
Medicare is the federal health insurance program for people who are 65 or older, certain younger people with disabilities, and people with End-Stage Renal Disease.
Medicaid is