With Original Medicare and Medicare Supplement plans, you can go to any doctor or hospital that takes Medicare, anywhere in the U.S., and in most cases, you won’t need a referral to see a specialist. With a Medicare Advantage plan, you may need to use doctors and other providers who are in the plan’s network and service area, for the lowest costs. So understanding the size of the network is important.
Some plans won’t cover services from providers outside the plan’s network and service area. Patients may also need to get a referral to see a specialist, however, there are Medicare Advantage plans that no longer require referrals.