Plans are only available in some locations. Health Alliance Medicare is a Medicare Advantage Organization with a Medicare contract. Enrollment in Health Alliance Medicare depends on contract renewal. Health Alliance Northwest is a Medicare Advantage Organization with a Medicare contract. Enrollment in Health Alliance Northwest depends on contract renewal. This information is not a complete description of benefits. Call customer service for more information. Every year, Medicare evaluates plans based on a 5-star rating system. Out-of-network/non-contracted providers are under no obligation to treat Health Alliance Medicare Health Alliance Northwest members, except in emergency situations. Please call our customer service number or see your Evidence of Coverage for more information, including the cost- sharing that applies to out-of-network services.