Doctor Leaving Your Medicare Advantage Plan? (2026–2027 Guide)
Bottom Line
Confirm your doctor's departure date and request written arrangements for ongoing treatment or covered care outside the network. You may need a replacement doctor; switching plans requires an eligible enrollment window, and the departure alone doesn't create one.
If your doctor is leaving your Medicare Advantage network, confirm the departure date and ask your plan how to keep your treatment on track. Your options include another network doctor, covered out-of-network care when available, or changing coverage during an eligible enrollment period. A doctor’s departure alone does not automatically let you switch plans immediately.
If you also own a business and are considering an SBA loan, life insurance for an SBA loan is a separate planning question to discuss with your lender. It is unrelated to Medicare benefits or enrollment.
Confirm exactly what is changing
Call your plan’s member services number and the doctor’s billing office. Establish:
- The final in-network date and whether the departure is confirmed or negotiations continue.
- The exact plan and office location affected.
- Whether the doctor will continue treating you out of network or accepting Original Medicare.
- Which upcoming visits, procedures and treatment facilities need a new coverage arrangement.
Save the notice and record each call’s date, representative and reference number. If the doctor is retiring, switching insurance cannot preserve that relationship.
Federal notice rules generally require 45 days’ advance notice for affected primary care and behavioral health patients, and 30 days for affected patients of other departing providers. Which patients must receive notice depends on assignment and treatment history; for terminations for cause, plans must make a good-faith effort to meet those deadlines.
Can you keep the doctor under your current plan?
Start with your plan type and its Evidence of Coverage.
| Current coverage | What the departure may mean | What to confirm |
|---|---|---|
| Medicare Advantage HMO | Routine out-of-network care generally is not covered unless the plan authorizes it or an exception applies. Some HMO-POS plans cover certain out-of-network services. | Written approval, covered services and your share of the bill. |
| Medicare Advantage PPO | Covered out-of-network services are generally available, usually at higher cost. | Whether the doctor will treat you, the service is covered and the higher cost fits your budget. |
HMOs have exceptions for emergency care, out-of-area urgent care and temporary out-of-area dialysis. PPO out-of-network access is not a promise that every doctor will agree to see you. Confirm arrangements before a routine appointment.
If you would consider another doctor, ask the plan for suitable clinicians who are accepting patients. Check appointment availability, relevant experience, travel distance and hospital affiliations. Ask your current doctor to help transfer records and identify any referrals that need updating.
Staying can be sensible when a suitable replacement is available and the rest of your coverage works well. If an established specialist is central to your care, explore your Medicare plan switching options while arranging coverage for appointments before any new plan begins.
Protect ongoing treatment before changing coverage
For scheduled surgery, cancer treatment, rehabilitation or another active treatment course, ask the plan’s care-management team about continued care with the departing provider. Have your doctor explain the treatment schedule and risks of interruption. Request written confirmation of any approved visits, facilities, cost sharing and end date.
There is an important access protection: Medicare Advantage coordinated care plans must arrange and cover medically necessary covered benefits outside their network at in-network cost sharing when available network providers cannot adequately meet a member’s medical needs. Ask the plan to apply that rule if it cannot offer a suitable alternative; wanting a particular doctor does not by itself establish inadequate access.
Understand what the 90-day transition rule covers
If you enter a new Medicare Advantage coordinated care plan while undergoing an active course of treatment, the new plan must provide at least a 90-day transition period without requiring prior authorization for that treatment, including treatment begun with an out-of-network provider. This protection concerns entering a new plan; it does not establish an automatic 90-day extension whenever a doctor leaves your current network.
If the plan denies requested coverage, ask for a formal coverage decision and follow the appeal instructions. Ask about a fast appeal if waiting could seriously harm your health, with supporting information from your doctor.
Which enrollment window lets you switch?
Knowing when you can change Medicare plans prevents choosing a replacement that cannot start when you need it.
Fall Medicare Open Enrollment
From October 15 through December 7, you can switch Medicare Advantage plans or return to Original Medicare and arrange standalone Part D coverage. Changes made during the fall 2026 window start January 1, 2027. That does not resolve appointments remaining in 2026.
Medicare Advantage Open Enrollment
From January 1 through March 31, people already enrolled in Medicare Advantage can generally make one change: switch Advantage plans or return to Original Medicare, with the option to join a standalone Part D plan. Coverage starts the first day of the month after the plan receives the request.
A Special Enrollment Period for a significant network change
CMS must determine that the network change is significant. Eligible affected members are assigned to, currently receiving care from, or have received care within the past three months from a departing provider or facility.
The resulting Special Enrollment Period permits one change. It starts in the month you are notified of eligibility and ends two calendar months after that month. It allows another Advantage plan or Original Medicare, with a coordinating opportunity for standalone Part D.
Call 1-800-MEDICARE with your notice to confirm eligibility, deadline and effective date. If a treatment interruption threatens your health, ask whether an exceptional-circumstances enrollment review applies; approval is case-specific.
Would Original Medicare and Medigap solve the problem?
Original Medicare consists of Part A hospital insurance and Part B medical insurance. It lets you use doctors who accept Medicare, so confirm your doctor will continue doing so. Medicare Advantage is a private-plan way to receive Part A and Part B benefits. With Original Medicare, you can add standalone Part D for prescription drug coverage.
Medigap, also called Medicare Supplement insurance, helps pay certain Original Medicare deductibles, copayments and coinsurance. It cannot supplement an Advantage plan.
Leaving Advantage and qualifying for Medigap after Medicare Advantage are separate questions. Annual Medicare Open Enrollment does not generally guarantee Medigap acceptance without medical underwriting. Outside your protected enrollment period or another applicable protection, an insurer may decline your application or charge more. Federal Medigap Open Enrollment lasts six months, starting the first month you are at least 65 and enrolled in Part B. States may offer additional rights.
Certain trial rights can help. For example, if you joined Advantage when first eligible for Medicare at 65 and return to Original Medicare within your first year, you have special Medigap purchase rights for a limited time.
Before leaving Advantage, confirm any Medigap acceptance, premium and start date you are relying on, and coordinate drug coverage. Original Medicare alone has no annual out-of-pocket limit; Advantage plans have limits for covered Medicare services. Include that difference in your comparison.
Compare replacements around your actual care
Start by verifying your doctors before choosing a plan: check the insurer’s directory and confirm participation with each provider for the exact plan, location and coverage year. For January 2027 coverage, use published 2027 documents and obtain 2027 participation confirmation.
Compare your remaining doctors, hospitals, prescriptions and pharmacy alongside premiums, treatment copays, deductibles and medical out-of-pocket limits. Ask how a midyear switch would treat spending already incurred. Use Medicare’s comparison tools with your ZIP code, exact drugs, dosages and pharmacy to compare local plans and estimated drug costs; obtain an insurer’s actual Medigap quote if considering that route.
If you are helping a parent compare Medicare plans, organize notices, medicines, appointments and call notes. Your parent makes the coverage choice unless an authorized representative acts for them; Medicare also needs permission before sharing their personal health information with you.
Prepare a comparison of your current plan and two realistic alternatives. Confirm the doctor, treatment arrangements, drug coverage, total expected costs and effective date for each before submitting an enrollment request.