How to Check Whether a Medicare Advantage Plan Actually Has Enough Specialists

Medicare Advantage plans are required by CMS to maintain networks that give beneficiaries adequate access to primary care physicians, specialists, hospitals, and other providers within reasonable time and distance standards. What is adequate on paper does not always translate to adequate in practice. Provider directories list physicians who may have left the network, who are not accepting new patients, or who technically contract with the plan but rarely see its members. Verifying actual network access before you enroll, not assuming it based on directory listings, is one of the most important steps in choosing an Advantage plan.

Bryce's Take

The network adequacy check is the most important thing I do before recommending any Advantage plan to a client with specific specialist needs. I call the plan, I verify that the specific physician is contracted and accepting new patients, and I confirm their office actually bills through the plan. Provider directories list physicians who have not seen a plan patient in years. Verify directly, not from the directory.

CMS network adequacy standards

CMS sets time and distance standards for Medicare Advantage plan networks. Plans must demonstrate that members can reach primary care physicians, specialists in common specialties, and hospitals within defined maximum travel times and distances. Standards vary by geography, rural beneficiaries have different access expectations than urban beneficiaries. Plans must file network adequacy certifications with CMS annually. Plans that fail to meet standards may be required to make exceptions for out-of-network care at in-network cost-sharing levels when no adequate in-network option exists.

Why directory accuracy is a real problem

CMS has consistently found that Medicare Advantage provider directories contain inaccurate information. Studies and audits have documented physicians listed as in-network who have not participated in a plan for years, physicians listed as accepting new patients who have closed their practices, and incorrect office addresses and phone numbers. When you rely on a directory listing to choose a plan and then discover at enrollment that your physician is actually not contracted or not seeing new patients under that plan, you have limited recourse until the next Annual Enrollment Period.

How to verify network participation before enrolling

The only reliable way to verify network participation is direct contact. Before enrolling in any Medicare Advantage plan, call each of your key physicians, primary care, cardiologist, oncologist, or any specialist you see regularly, and ask specifically whether they are contracted with the plan and whether they are accepting new Medicare Advantage patients under that plan. Do not rely solely on the plan's online directory. Ask the physician's billing staff, not the front desk receptionist, because billing staff know the insurance contracts. Also ask whether the plan requires a referral for your specialty and whether prior authorization is required for your recurring care.

The continuity of care protection

If you enroll in a Medicare Advantage plan and then discover your physician is not in-network, you have continuity of care rights for ongoing treatment. Plans must cover continuity of care for up to 90 days at in-network cost-sharing for active treatment with a provider who leaves the network after your enrollment. This is a transition protection, not a permanent exception. If your physician leaves the plan's network mid-year, you can continue seeing them for ongoing treatment at in-network cost-sharing for 90 days while you find a replacement in-network provider.

Trying to verify whether a specific plan includes your doctors before you enroll?

Network verification is one of the most important steps in choosing an Advantage plan, and it requires more than checking an online directory. I do this verification as part of every plan comparison I run for clients.

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Requesting a network exception for out-of-network care

If a required specialist is not available in-network in your area, you can request a network exception, coverage of an out-of-network specialist at in-network cost-sharing rates when the plan cannot provide access to an in-network specialist with appropriate expertise within the required time and distance standards. These exceptions are particularly relevant for rare conditions, subspecialties with limited in-network representation, or geographic areas where specialists are scarce. Document the unavailability of in-network options when requesting the exception.

Annual network changes to watch for

Provider networks change at the start of each plan year. Physicians may choose not to renew contracts with specific plans, hospital systems may exit plan networks, and new providers may join. The Annual Notice of Change sent by your plan before October 15 includes notification of network changes. During the Annual Enrollment Period, re-verify that your key providers are still contracted before renewing your plan. A provider who was in-network in December may not be in-network in January.

Frequently asked questions

Can I keep seeing my doctor out-of-network if I really want to?

With an HMO, out-of-network care is generally not covered except in emergencies. With a PPO, out-of-network care is covered at higher cost-sharing. Original Medicare allows you to see any Medicare-accepting provider, which eliminates network concerns entirely.

What if my plan's directory says my doctor is in-network but the doctor's office says they are not?

The physician's billing office is the authoritative source on their contract status. If there is a discrepancy, file a grievance with the plan about directory inaccuracy. You may also have grounds for an exception if you enrolled based on the inaccurate directory and now face out-of-network costs.

Is CMS improving provider directory accuracy?

CMS has implemented requirements for more frequent directory updates and real-time directory access, and has established penalties for plans with persistently inaccurate directories. The situation has improved from several years ago, but verification through direct contact with providers remains the most reliable approach.

Do Medigap plans have provider networks?

No. Medigap supplement plans have no provider networks. They pay alongside Original Medicare, and any Medicare-accepting provider in the country accepts coverage from any Medigap plan. There is nothing to verify.

Bryce Casson

Licensed Independent Medicare Broker

Bryce Casson is an independent Medicare insurance broker who works with every major carrier. He does not represent any single insurer, which means his recommendations are based on what actually fits each client's situation, not on commissions or quotas.