Provider Networks

Medicare Advantage 

These plans have defined networks, while other Advantage plans allow you to use both In-Network and out-of-network care.
 

Medicare Supplemental

These plans do not have a defined network, so you can go to any doctor, clinic, hospital, specialty care in the US, if they accept and bill Medicare.
 

Primary Care Physician

Some plans require you to have a designated clinic or a primary care physician, while other plans only allow in-network referrals.
 

Out-of-State Networks

Some plans offer Travel or Visitor benefits that allow you to be out-of-state for 9-months and you only pay your co-pay for medical services. Other plans allow you to see health care providers but at a higher monthly premium and higher out-of-pocket co-pay.

International Networks

Medicare only pays up to $10,000 for Emergence only medical care if you are outside the US. You would have to pay out-of-pocket then submit the receipt to your Medicare plan for reimbursement.