Medicare · Cornerstone
HMO vs. PPO Medicare Advantage plans
Last reviewed June 11, 20264 min readBy the Goodsurance editorial team Reviewed by the Goodsurance editorial team
Once someone decides to go the Medicare Advantage route, the next fork is the plan's structure, and it almost always comes down to two letters: HMO or PPO. They describe how a plan handles networks and referrals, and that handling is what you will feel month to month. Both are Medicare Advantage, both cover everything Original Medicare covers, both usually bundle drug coverage, and both have an annual out-of-pocket maximum. The difference is how much they fence in where you get care.
1HMO: lower cost, tighter structure
An HMO generally asks two things of you. You stay in the plan's network for your care, and you often pick a primary care doctor who coordinates that care, including referrals to specialists. In return, HMO plans tend to carry lower premiums, frequently no premium on top of your Part B. If your doctors are in the network and you do not mind the referral process, an HMO can deliver solid coverage at a low monthly cost. The friction shows up when you want to see someone outside the network, or skip the referral.
One important reassurance: emergency and urgent care are covered no matter where you are, even outside the network and your service area. The network restriction applies to routine and planned care, not a genuine emergency, so an HMO does not leave you stranded while traveling. There is also a softer version worth knowing about, an HMO-POS (point of service), which allows some out-of-network care for certain services at a higher cost.
2PPO: more flexibility, higher cost
A PPO loosens both constraints. You can generally see specialists without a referral, and you can go outside the network and still have some coverage, just at a higher share of the cost. That flexibility is the selling point, and you pay for it: PPO premiums tend to run higher than HMO premiums. For someone who travels or simply does not want to ask permission before seeing a specialist, that room can be worth the extra cost.
Two cautions keep the PPO's freedom honest. "Covers out-of-network" is not the same as "covers it at the same price", your out-of-network share is higher, and out-of-network providers are not obligated to accept the plan at all. And PPOs come in local and regional varieties; a regional PPO covers a larger geographic area, which matters if your "out of network" is really "across the state line."
| HMO | HMO-POS | PPO | |
|---|---|---|---|
| Network | In-network only | Some out-of-network | Out-of-network allowed |
| Referrals | Usually required | Usually required | Not required |
| Out-of-network care | ✗ | Some, higher cost | Yes, higher cost |
| Premium tendency | Lowest, often none | Low | Higher |
Emergency and urgent care are covered anywhere on all three. Source: CMS.
3Prior authorization, the thing both share
This belongs in the open, because it surprises people regardless of HMO or PPO. Many services, especially expensive ones like advanced imaging, certain procedures, or a skilled-nursing stay, can require prior authorization: the plan reviews and approves the care before it agrees to pay.
In a routine year you may never notice it. In a complicated year it can mean a delay while approval is sorted out, or a denial that your doctor then has to appeal. This is not unique to one plan type and it is not improper; it is the cost-control mechanism that helps fund the low premiums and the out-of-pocket cap. But it is the single most common source of "I didn't expect that" on Advantage, so it belongs in the decision honestly. If never wanting that friction is your priority, that is a point in favor of Original Medicare plus a Medigap supplement.
4How to actually choose
The decision is less about the labels and more about three concrete things in your own life. There is no structurally superior choice: an HMO is not a worse plan, it is a tighter one that costs less; a PPO is not a better plan, it is a looser one that costs more. The fit depends on how you actually live and get care, which is exactly the kind of thing worth matching against specific plans in your area before you commit.
Three factors, one decision
Are your doctors in the network?
Check the current directory, not last year's
Does the referral step bother you?
Recurring friction if you see specialists often
How much do you travel?
A PPO or regional PPO matters if you are often away
5A note on the other types
HMO and PPO cover most of the market, but you may also see PFFS (Private Fee-for-Service) and MSA (Medical Savings Account) plans. They are less common: a PFFS plan sets its own payment terms and lets you see any provider who agrees to them, and an MSA pairs a high-deductible plan with a savings account Medicare funds. They are worth a separate look if one appears in your area and fits an unusual situation, but for most people, the real decision is the HMO-versus-PPO one above.
Common questions about Medicare
Quick answers to common questions
Tap any question to expand. Each question links to a fuller standalone answer.
What is the difference between a Medicare HMO and a PPO?
The main difference is flexibility in seeing doctors.
A Medicare Advantage HMO (Health Maintenance Organization plan) generally asks you to use doctors and hospitals within the plan's network and to pick a primary care doctor, and it often requires a referral (your primary doctor's approval) to see a specialist. A Medicare Advantage PPO (Preferred Provider Organization plan) lets you see providers both in and out of network, usually without referrals, though out-of-network care costs more. Both are types of Medicare Advantage plans (Part C, your Medicare benefits delivered through a private plan), and with either you still pay the Part B premium ($202.90 per month in 2026). HMO plans often have lower costs in exchange for tighter network rules, while PPO plans offer more freedom at a higher price. Which fits depends on whether your doctors are in network and how much flexibility you want.
Do I need a referral on Medicare Advantage?
It depends on the type of plan.
On many Medicare Advantage HMO plans (Health Maintenance Organization plans, where your Medicare benefits come through a private plan with a network), you typically need a referral, meaning your primary care doctor's approval, before you see a specialist. On most Medicare Advantage PPO plans (Preferred Provider Organization plans), you usually do not need a referral and can see specialists directly, including some out of network at a higher cost. Some HMO plans also offer a point-of-service option that allows certain out-of-network care. Because referral rules are set by each plan, the only way to know for sure is to check that plan's documents. Skipping a required referral can mean the plan does not pay, so it is worth confirming. To check the rules on a specific plan, reach out to a licensed Goodsurance advisor at 1-888-301-8091 (TTY 711), Mon to Fri 8 am to 5 pm PT.
Can I see out-of-network doctors on a Medicare Advantage PPO?
Yes.
A Medicare Advantage PPO (Preferred Provider Organization plan, where your Medicare benefits come through a private plan) lets you see doctors and hospitals outside the plan's network, but you usually pay more for out-of-network care than for in-network care. Staying in network keeps your costs lower, while going out of network is allowed and can be worth it if you want a specific provider. This flexibility is a key difference from a Medicare Advantage HMO (Health Maintenance Organization plan), which generally only covers in-network care except in emergencies. With a PPO, you also typically do not need a referral to see a specialist. Keep in mind the provider must accept the plan and Medicare. Emergency and urgent care are covered regardless of network on both plan types. The trade-off with a PPO is more freedom in exchange for generally higher costs than an HMO.
What is Medicare Advantage?
Medicare Advantage (also called Part C) is a way to get your Medicare benefits through a private insurance company approved by Medicare, instead of through Original Medicare run by the government.
These plans bundle your hospital coverage (Part A) and medical coverage (Part B) into one plan, and most include prescription drug coverage and extra benefits such as dental, vision, or hearing. You still pay your Part B premium ($202.90 per month in 2026), and the plan may charge its own premium on top, though many plans have a $0 premium. Plans use provider networks and may require you to use certain doctors and hospitals. Coverage, costs, and benefits vary by plan and by where you live.
What are the pros and cons of Medicare Advantage?
Medicare Advantage (Part C, your Medicare benefits delivered through a private plan) tends to offer lower or $0 monthly premiums, bundled prescription drug coverage, extra benefits like dental and vision, and a yearly cap on what you pay out of pocket for covered medical care.
The trade-offs are that plans use provider networks, so you may need to use certain doctors and hospitals, some services require prior approval, and your costs and covered providers can change each year. Original Medicare, by contrast, lets you see any doctor who accepts Medicare nationwide but has no out-of-pocket maximum on its own. Which fits depends on your doctors, prescriptions, travel habits, and budget. To find out which specific plan fits your situation, reach out to a licensed Goodsurance advisor at 1-888-301-8091 (TTY 711), Mon to Fri 8 am to 5 pm PT.
Can I switch back from Medicare Advantage to Original Medicare?
Yes, you can switch from Medicare Advantage (your Medicare benefits delivered through a private plan) back to Original Medicare during specific windows.
The two main chances each year are the Annual Enrollment Period from October 15 to December 7 (2026), with changes taking effect January 1, and the Medicare Advantage Open Enrollment Period from January 1 to March 31 (2026), which lets people already in a Medicare Advantage plan switch back to Original Medicare once. When you return to Original Medicare, you may want to add a Part D drug plan and a Medigap (Medicare Supplement) policy. One important caution: outside your first six-month Medigap open enrollment window, a Medigap insurer can review your health and may charge more or decline you, depending on your state. To review your timing and options, reach out to a licensed Goodsurance advisor at 1-888-301-8091 (TTY 711), Mon to Fri 8 am to 5 pm PT.
Does Medicare Advantage include prescription drug coverage?
Most Medicare Advantage plans (your Medicare benefits delivered through a private plan) include prescription drug coverage, known as Part D, built right into the plan.
These are often labeled MA-PD plans. Because the drug coverage is bundled, you usually do not, and often cannot, add a separate standalone Part D plan on top of a Medicare Advantage plan that already includes drugs. A few Medicare Advantage plans, such as some Medical Savings Account plans or certain plans designed to pair with separate drug coverage, do not include Part D. In 2026, Part D coverage also carries a yearly out-of-pocket cap of $2,100 on covered prescription drugs, which applies whether your Part D is standalone or built into a Medicare Advantage plan. Always check a specific plan's drug list to confirm your medications are covered.
Do I still pay the Part B premium with Medicare Advantage?
Yes.
Even when you join a Medicare Advantage plan (your Medicare benefits delivered through a private plan), you continue to pay your monthly Part B premium, which is $202.90 in 2026. Many Medicare Advantage plans charge a $0 plan premium of their own, but that is separate from the Part B premium you owe to Medicare. Some plans even offer a Part B premium reduction, where the plan pays back part of your Part B premium, though availability varies by plan and location. You also remain responsible for the Part B annual deductible of $283 in 2026 where it applies, and your plan sets its own copays and coinsurance for covered services. So the Part B premium is a baseline cost of being in Medicare, whether you choose Original Medicare or Medicare Advantage.
What is the difference between Original Medicare and Medicare Advantage?
Original Medicare is the government-run program made up of Part A (hospital) and Part B (medical), letting you see any doctor or hospital nationwide that accepts Medicare, with no network.
Medicare Advantage (Part C) delivers those same benefits through a private plan, usually within a provider network, and often bundles prescription drug coverage plus extras like dental and vision. With Original Medicare you typically pay the Part B premium ($202.90 per month in 2026), the Part B deductible ($283 in 2026), and 20 percent of many costs with no annual out-of-pocket cap, which is why many people add a Medigap (supplement) policy and a separate Part D drug plan. Medicare Advantage usually has a lower or $0 plan premium and a yearly out-of-pocket maximum, but uses networks and may require prior approval. Which fits depends on your doctors, prescriptions, and budget.
Which is better, Medigap or Medicare Advantage?
Neither is better for everyone; they suit different needs.
Medigap (also called Medicare Supplement, a private policy that pairs with Original Medicare) lets you see any doctor nationwide who accepts Medicare with no network and very predictable out-of-pocket costs, but you pay a monthly Medigap premium and add a separate Part D drug plan. Medicare Advantage (Part C, your Medicare benefits through a private plan) often has a lower or $0 plan premium, bundles drug coverage and extras like dental and vision, and caps your yearly out-of-pocket costs, but uses provider networks and may require prior approval. People who travel, want maximum doctor freedom, and prefer steady costs often lean Medigap; people who want low premiums, extras, and a network they are comfortable with often lean Medicare Advantage. With both, you still pay the Part B premium ($202.90 per month in 2026). To find out which fits your situation, reach out to a licensed Goodsurance advisor at 1-888-301-8091 (TTY 711), Mon to Fri 8 am to 5 pm PT.
Does Original Medicare have an out-of-pocket maximum?
No.
Original Medicare (Part A hospital and Part B medical, run by the government) does not have an annual out-of-pocket maximum on its own. After you meet the Part B deductible ($283 in 2026), you generally pay 20 percent of the Medicare-approved amount for many services, and there is no yearly cap on that 20 percent. This is one reason many people who choose Original Medicare also buy a Medigap policy (Medicare Supplement, private coverage that fills in those gaps) to make their costs more predictable. By contrast, Medicare Advantage plans (Part C, your benefits through a private plan) are required to include a yearly out-of-pocket maximum for covered medical services. So if a built-in spending cap matters to you, Original Medicare alone does not provide one, but pairing it with a Medigap policy or choosing Medicare Advantage can.
Can I have both Original Medicare and a Medicare Advantage plan?
No, you cannot use both at the same time.
When you enroll in a Medicare Advantage plan (Part C, your Medicare benefits delivered through a private plan), that plan becomes the way you receive your Part A and Part B benefits, so you are no longer using Original Medicare to pay your claims while you are in the plan. You stay enrolled in Medicare and keep paying the Part B premium ($202.90 per month in 2026), but the private plan handles your coverage. You also cannot pair a Medigap (supplement) policy with a Medicare Advantage plan, since Medigap only works alongside Original Medicare. If you later leave Medicare Advantage during an enrollment window, you return to Original Medicare and can then consider adding a Part D drug plan and a Medigap policy. The two systems are alternatives, not something you combine.
References
- Medicare.govMedicare Advantage plan types, networks, and how out-of-network coverage works.
- CMS, Centers for Medicare & Medicaid ServicesFederal rules on MA networks, referrals, prior authorization, and out-of-network coverage. cms.gov
- Medicare Rights CenterIndependent guidance on choosing a plan type. medicarerights.org