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State Availability
Not available in Alaska, Delaware, Maryland, Michigan, Mississippi, Montana, Wyoming, or the U.S. territories.
Since most MA plans work with (constantly changing) networks of doctors and other health professionals and those networks are based on contractual agreements, either party can change them.
Your best source of MA health insurance coverage with a specific doctor is to check with their own insurance representative in the doc's office - also find out how they could be listed on the specific plan - group or individual. They might also be able to tell you other MA groups for which the medical provider or other health provider is affiliated.
If specific providers were the end goal, perhaps traditional Medicare would have been a better choice if the providers take Medicare at all - course, switching now may leave you financially vulnerable if there are high healthcare cost or pre-existing conditions because a Medigap policy might be denied, or very expensive and contain some exclusions for a period due to health.
You have until Monday (December 7) to switch MA plans during open enrollment.
As far as their ability to keep their list of providers updated - Medicare.gov says this and describes some of the different types of coverage available under MA plans - HMO, PPO, PFFS, SNP - familiarize yourself for your benefit:
Medicare.gov - Medicare Advantage Plans
Medicare Advantage Plans are another way to get your Medicare Part A and Part B coverage. Medicare Advantage Plans, sometimes called โPart Cโ or โMA Plans,โ are offered by Medicare-approved private companies that must follow rules set by Medicare. Most Medicare Advantage Plans include drug coverage (Part D). In many cases, youโll need to use health care providers who participate in the planโs network and service area for the lowest costs. These plans set a limit on what youโll have to pay out-of-pocket each year for covered services, to help protect you from unexpected costs. Some plans offer out-of-network coverage, but sometimes at a higher cost.
Just like any other insurance - the more options, the more inclusive, the higher the (premium) cost.