If you have seen the same doctor for years, the most important 2027 Medicare question may not be about premiums at all. It may be whether that doctor, and the hospital you trust, will still be in your plan's network next year.
Major insurers have said publicly that more of their 2027 Medicare Advantage plans will use narrower networks. Here is what that means, what it does not mean, and how to protect the care relationships you already have.
What Insurers Have Said About 2027 Networks
On October 1, 2026, Reuters reported that UnitedHealthcare and Aetna, two of the largest Medicare Advantage insurers, will shift toward plans that limit provider access:
- UnitedHealthcare said it will exit some locations where it offers a higher share of PPO plans, which cost insurers more to operate. A company spokesperson said 66% of its members will have access to both an HMO and a PPO in 2027, down from 70% in 2026.
- Aetna said it is expanding HMO plans. Reuters also reported that Aetna will offer plans in 41 states in 2027, down from 43.
- Humana said it will offer plans in more than 80% of U.S. counties, down from 85% in 2026.
These are company-wide statements. They do not tell us which plans or networks will change in any particular Kentucky county, including Laurel County. The only way to know is to check your specific plan.
PPO and HMO: What the Terms Mean
A network is the group of doctors, hospitals, and other providers a plan contracts with.
- HMO (Health Maintenance Organization): You generally must use in-network providers except in emergencies, and many HMOs require a referral from your primary care doctor to see a specialist.
- PPO (Preferred Provider Organization): You pay less in network, but you can usually see out-of-network providers for covered services at a higher cost, and referrals are often not required.
PPO vs. HMO: Typical Features
| Feature | Typical HMO | Typical PPO |
|---|---|---|
| Network flexibility | Must generally use in-network providers | Can usually go out of network at higher cost |
| Primary care doctor | Usually required to choose one | Often optional |
| Specialist referrals | Often required | Often not required |
| Out-of-network, non-emergency care | Generally not covered | Generally covered at higher cost sharing |
| Emergency and urgent care | Covered in or out of network | Covered in or out of network |
| Out-of-pocket maximum | Applies to in-network care | Separate or combined limit may include out-of-network care |
Swipe the table sideways to see every column
These are general patterns. Actual rules vary by plan, and some HMOs offer a point-of-service option. Confirm every detail in the plan’s Evidence of Coverage.
For a longer explanation, see our article on HMO vs. PPO Medicare Advantage plans.
In-Network vs. Out-of-Network Coverage
In a PPO, going out of network does not mean you have no coverage, but it usually means higher copays or coinsurance, and the provider must still be willing to accept your plan. In an HMO, routine out-of-network care is generally not covered at all. Emergency care and urgently needed care are covered in both types of plans, wherever you are in the U.S.
Why Your Doctor Might Not Be in a Different Plan
Doctors and hospitals sign contracts with insurers plan by plan, not company-wide. A cardiologist in London might participate in one insurer's PPO but not that same insurer's HMO. Contracts are also renegotiated, so a provider can join or leave a network from one year to the next.
That is why an unchanged insurer name does not guarantee an unchanged network. If you switch from one plan to another within the same company, or your plan is merged into a new one, check your providers again.
Hospitals Need to Be Checked Separately
Your doctor being in network does not mean every hospital where they practice is in network. Many people in southeastern Kentucky rely on a local hospital for routine care and travel to a larger system, such as one in Lexington, for specialty care. Verify each facility you might use, including outpatient centers, labs, and imaging locations.
How 2027 Changes Could Affect Established Care
If your plan narrows its network or you move to an HMO, you may need referrals you did not need before, a new primary care doctor, or a different hospital for scheduled procedures. Some people with ongoing treatment, such as cancer care or dialysis, should ask the plan specifically about continuity of care before making a change.
Five Things to Verify Before Choosing a 2027 Medicare Advantage Plan
- 1. Your primary care doctor. Confirm the doctor, and the specific office location, is in network for the exact 2027 plan.
- 2. Your specialists. List every specialist you see and check each one, along with whether referrals are required.
- 3. Your hospitals. Check your local hospital and any larger hospital you might need for specialty care.
- 4. Your prescriptions and pharmacy. Make sure each drug is on the plan's formulary and your pharmacy is in network, ideally preferred.
- 5. Your out-of-network rules and costs. For a PPO, understand the out-of-network cost sharing and maximum out-of-pocket limit. For an HMO, understand what happens if you see a provider outside the network.
Our guide on how to check whether your doctor accepts a Medicare plan shows how to verify providers step by step.
Questions to Ask Before Switching Plans
- Is my doctor contracted for this plan ID in 2027, not just with this insurer?
- Do I need a referral to see my specialist?
- Which hospitals near me are in network?
- Is there a transition period if I am in the middle of treatment?
- What is the maximum I could pay out of pocket in a year, in and out of network?
Ask the provider's office as well as the plan, because directories are not always current.
Frequently Asked Questions
Will my doctors still be covered in 2027?
Only your plan's 2027 provider directory and the provider's office can confirm it. Check before December 7.
Is a PPO always better than an HMO?
No. A PPO offers more flexibility, but an HMO may have lower costs. The right choice depends on your doctors, how you use care, and your budget.
Does Original Medicare have a network?
No. Original Medicare lets you see any provider in the U.S. who accepts Medicare. Many people pair it with a Medigap policy for help with out-of-pocket costs.
What if my doctor leaves my plan mid-year?
Plans are generally required to notify affected members. Contact the plan to learn your options.
Is emergency care covered out of network?
Yes. Emergency and urgently needed care are covered in both HMOs and PPOs.
How Summit Benefits Group Can Help
We can take your list of doctors, hospitals, and prescriptions and check them against the 2027 plans available in your county. Request a Medicare plan review. If your plan is leaving your area entirely, our companion article on 2027 Medicare Advantage service-area reductions explains your options.
Sources
- Reuters: UnitedHealthcare, Aetna say 2027 Medicare Advantage plans will offer more limited provider access (Oct. 1, 2026)
- Medicare.gov
Summit Benefits Group is a licensed independent insurance agency. We are not affiliated with or endorsed by Medicare, CMS, Medicaid, or the federal government, and this article is general education, not a recommendation of any specific plan. We do not offer every plan available in your area. For information on all of your options, contact Medicare.gov, 1-800-MEDICARE (TTY 1-877-486-2048), or your State Health Insurance Assistance Program (SHIP).