Is Your Doctor Still In-Network? A Medicare Open Enrollment Checklist for 2027

October 5, 2026 · Posted by Pick The Doc Team · Editorial policy

Medicare Open Enrollment runs from October 15 through December 7. During this period, people with Medicare can review and change their health or drug coverage for the following year. Changes made during Open Enrollment generally take effect January 1, 2027.

A plan can look familiar and still work differently next year. Costs, covered drugs, pharmacy arrangements, and provider networks may change. Before you keep your current coverage or choose a new plan, check whether the doctors and facilities you depend on will still be practical choices in 2027.

This checklist focuses on access to care. It does not recommend a particular plan or replace the official plan documents and individualized help available through Medicare.

First, know whether “in-network” applies to you

The right questions depend on how you receive Medicare coverage.

Original Medicare does not use a plan network in the same way a Medicare Advantage plan does. You can generally visit any doctor or hospital in the United States that takes Medicare. You should still ask whether a provider accepts new Medicare patients and whether the provider accepts Medicare assignment. Accepting assignment means the provider agrees to accept the Medicare-approved amount as full payment for covered services, apart from your applicable deductible and coinsurance.

Medicare Advantage plans may require you to use doctors, hospitals, and other providers in the plan's network and service area for non-emergency care. Some plans cover out-of-network care, often at a higher cost, while others generally do not. Referral and prior-authorization rules can also differ by plan.

Do not ask only whether a doctor “accepts Medicare.” If you have Medicare Advantage, ask whether the doctor participates in your exact plan. Two plans from the same insurance company may have different networks.

Read the notices your plan sent you

If you are enrolled in a Medicare health or drug plan, look for the Annual Notice of Change, often called the ANOC. Plans send it each fall to explain changes in coverage, costs, and other plan details that begin in January. If you did not receive it, contact your plan and request a copy.

Also review the plan's Evidence of Coverage. Pay particular attention to sections about provider networks, out-of-network costs, referrals, prior authorization, prescription drugs, pharmacies, and service areas.

These documents are a starting point, not the end of the check. Confirm the participation of each important provider directly rather than assuming that an unchanged plan name means an unchanged network.

Make one list before comparing plans

Write down the healthcare relationships and services that would be difficult to replace. Include the exact name and location whenever possible:

Your primary care doctor and the specific practice location you use
Specialists you see regularly or expect to see next year
Hospitals, outpatient centers, laboratories, and imaging centers
Behavioral-health clinicians, physical therapists, and other ongoing providers
Home-health agencies or durable-medical-equipment suppliers you use
Your preferred local, mail-order, and specialty pharmacies
Every prescription you take, including its exact name, dose, and form

If you are unsure which specialty handles a health concern, browse our plain-language specialty guides. They can help you identify the kinds of doctors to include, but they do not determine whether a particular clinician is covered.

Check each doctor in two places

Start with the plan's current provider directory or Medicare's plan-comparison tools. Search for the individual doctor, not only the medical group. Check the address because participation can differ by practice location.

Then call the doctor's office. Give the staff member the full plan name and plan type shown on the insurance card or plan documents. Ask:

Will this doctor be in-network for this exact plan in 2027?
Is this particular office location included?
Is the doctor accepting new patients under the plan?
Will the office confirm participation again before your next visit?

Finally, call the plan's member-services number and ask the same questions. Record the date, the representative's name or identification number, and any call reference number. If the plan and the doctor's office give different answers, ask both sides to investigate before relying on the listing.

Look beyond your primary care doctor

Keeping a primary care doctor may not help enough if a frequently used specialist, hospital, or treatment facility is outside the network. Check the complete care path.

For example, confirm the cardiologist as well as the hospital where the cardiologist performs procedures. Check the surgeon and the surgical facility. If you regularly need laboratory work, imaging, therapy, infusions, or medical equipment, check those providers too.

If you are considering a new primary care practice, ask which specialists and hospitals it commonly works with. Our guide to choosing a doctor on Medicare covers credentials, access, coordination, and other factors that matter after you confirm coverage.

Check referral and prior-authorization rules

A doctor can be in-network while a service still requires another step. Some Medicare Advantage plans require a referral before a covered specialist visit. Plans may also require prior authorization before certain services, supplies, or procedures.

Ask the plan whether referrals are required for the specialists you use and whether existing referrals will carry into 2027. Ask the doctor's office how it handles referrals and prior-authorization requests. PickTheDoc's referral checker can help you prepare questions, but the plan's current rules and documents control.

Review prescriptions and pharmacies separately

A doctor's network status does not tell you whether your prescriptions will be covered the same way. Review the plan's 2027 formulary, which is its list of covered drugs. Check each medication's tier and any rules such as prior authorization, step therapy, or quantity limits.

Also check pharmacy status. A pharmacy may be in-network without being a preferred pharmacy, and your cost may differ. Confirm local, mail-order, and specialty pharmacies separately if you use more than one.

Do not stop or change a medication because of a coverage listing. If a prescription appears to have different coverage next year, ask the plan and the prescribing clinician about the appropriate next steps.

If a doctor is not in the network

First, verify that you searched for the right clinician and location. Then ask the plan whether out-of-network care is covered and what your cost would be. Ask the doctor's office whether its 2027 participation is final.

If the doctor will not be available through the plan, your main options may include choosing another in-network doctor or comparing other Medicare coverage. Look at the whole plan rather than one provider alone: other doctors, hospitals, prescriptions, pharmacies, premiums, deductibles, copayments, and maximum out-of-pocket costs may all affect the decision.

Switching from Medicare Advantage to Original Medicare can also raise separate questions about prescription coverage and Medigap availability. Do not cancel existing coverage until you understand the effective date and the consequences of the change. Medicare or a State Health Insurance Assistance Program counselor can provide individualized, unbiased help.

If a network change could interrupt care that is already underway, contact the plan promptly. Ask what help and continuity options are available and keep copies of notices and call records.

Your Medicare doctor-network checklist

Read the Annual Notice of Change and Evidence of Coverage.
Confirm whether you have Original Medicare or Medicare Advantage.
List your doctors, specialists, facilities, suppliers, and pharmacies.
Check every important provider in the plan directory.
Confirm the exact plan and location with each provider's office.
Confirm the same details with the plan and save the call reference number.
Review referral and prior-authorization rules.
Check every prescription in the 2027 formulary.
Compare preferred and in-network pharmacies.
Compare total costs and access before changing coverage.
Complete any Open Enrollment change by December 7.

Where to get official help

Use Medicare Plan Compare to review available coverage. For personal help, call 1-800-MEDICARE (1-800-633-4227) or contact your local State Health Insurance Assistance Program. SHIP offers trusted, unbiased, one-on-one Medicare counseling.

Sources

This is not medical or insurance advice. This article is educational only. Medicare plan rules and provider participation can change. Confirm details with Medicare, your plan, and your providers before making a coverage decision. In a medical emergency, call 911. Read our full medical disclaimer.

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