Because of our exceptional commitment to quality, Health Alliance has maintained the highest accreditation possible from the National Committee for Quality Assurance (NCQA) since 1995. Our commercial HMO/POS and Medicare HMO accreditation is excellent. Our commercial PPO and Medicare PPO accreditation is full. Excellent accreditation is only awarded to those plans that meet or exceed NCQA's rigorous requirements for consumer protection and quality improvement and have Healthcare Effectiveness Data and Information Set (HEDIS) results in the highest range of national performance.