Medicare Part C does NOT offer which of the following?

Private fee-for-service (POS) plans
Kaiser Foundation plans
Health maintenance organization (HMO) plans
Medicare medical savings accounts (MSA-pilot program)

Kaiser Foundation plans

Rationale: Medicare Part C does not offer Kaiser Foundation plans, which are forms of private health insurance. Part C does offer POS, HMO, MSA-pilot program, and also private fee-for-service (PFFS), provider sponsored organization (PSO), and other plans.