Any doctor or hospital accepting Medicare anywhere in the United States is covered under original Medicare.
When a person has Medicare Advantage, their coverage is usually region-specific, and their plan type will determine whether the coverage extends out of state.
People participating in Health Maintenance Organizations (HMOs) must use certain healthcare providers. Out-of-network services, such as those located in another state, are rarely covered.
Out-of-state care may be covered by a Preferred Provider Organization (PPO). To find out if a plan covers you, carefully read the documentation or contact your provider.