Neither one is better on its own. A Medicare Advantage HMO generally requires you to use the plan’s network, choose a primary care doctor and get a referral before you see a specialist; a Medicare Advantage PPO lets you use out-of-network providers for covered services, usually at a higher cost, with no primary care doctor and no referrals (Medicare.gov). Both cap what you can spend in a year, and for 2027 CMS has set that in-network ceiling at $9,850 for either type, with a PPO carrying a second combined cap of up to $14,800 for in-and-out-of-network care together (CMS CY 2027 MOOP calculations).
The question people actually type is “which is better,” and the honest answer is that the two designs trade the same three things in opposite directions: how far your network reaches, how much you pay each month, and how much you pay when you use care. One of them fits your doctors, your travel and your budget better than the other. The job is to find out which, with real numbers, before Open Enrollment opens on October 15.
Here is how each type works, what CMS allows them to charge in 2027, where the differences show up in a normal year and a bad one, and how to decide.
What is a Medicare Advantage HMO?
An HMO, or Health Maintenance Organization, is the most common Medicare Advantage design. Medicare.gov’s description is specific: in an HMO “you generally must get your care and services from doctors, other health care providers, and hospitals in the plan’s network,” and if you go outside it for non-emergency care “you may have to pay the full cost” (Medicare.gov HMO).
Three rules follow from that:
- A primary care doctor. “In most HMOs you need to choose a primary care doctor.” That doctor coordinates your care.
- Referrals. “In most cases, you have to get a referral to use a specialist in HMO Plans.” Certain preventive services, such as a yearly mammogram, are the exception.
- Network exceptions that always apply. Emergency care, out-of-area urgent care and temporary out-of-area dialysis are covered wherever you are, in network or not.
Some HMOs include a point-of-service option, written HMO-POS. Medicare.gov says these plans “may allow you to get some services out-of-network for a higher copayment or coinsurance.” The services, the amounts and whether the option exists at all are plan-specific, so an HMO-POS is not a PPO with a different name. It is an HMO with a defined list of exceptions.
One more rule is easy to miss. Most HMOs include Part D drug coverage, but “if you join an HMO plan that doesn’t offer drug coverage, you can’t join a separate Medicare drug plan.” The same is true of a PPO. If you want drug coverage in Medicare Advantage, it has to be inside the plan you pick.
What is a Medicare Advantage PPO?
A PPO, or Preferred Provider Organization, keeps the network but opens the door around it. “You pay less if you go to providers and facilities that belong to the plan’s network,” Medicare.gov says, and “you can also use out-of-network providers for covered services, if they’re participating in Medicare or accept assignment, but you’ll usually pay more” (Medicare.gov PPO).
Read that condition twice. The out-of-network provider must participate in Medicare or accept Medicare assignment. A doctor who has opted out of Medicare entirely is not available to you on a PPO any more than on an HMO.
The administrative side is lighter. Medicare.gov’s comparison answers “No” to both “Do I need to choose a primary care doctor?” and “Do I have to get a referral to see a specialist?” for PPO plans (Medicare.gov compare). The financial side is heavier: PPO plans “usually charge a premium, in addition to the monthly Part B premium.”
Federal rules distinguish two kinds. An MA regional plan is defined as “a coordinated care plan structured as a preferred provider organization (PPO) that serves one or more entire regions,” and an MA local plan is any Medicare Advantage plan that is not a regional plan (42 CFR 422.2). The same section defines the HMO’s point-of-service option as a benefit under which “the HMO plan allows members the option of receiving specified services outside of the HMO plan’s provider network.” A regional PPO’s service area is the whole region rather than a set of counties, which can matter if you split the year between two parts of Florida.
HMO vs PPO side by side
| HMO | PPO | |
|---|---|---|
| Network | Generally must use network providers for non-emergency care | Network providers cost less; out-of-network covered at higher cost if the provider participates in Medicare or accepts assignment |
| Primary care doctor | Usually required | Not required |
| Referral to a specialist | Usually required | Not required |
| Prior authorization | May be required for certain services | May be required for certain services |
| Emergency, out-of-area urgent care, out-of-area dialysis | Covered anywhere in the U.S. | Covered anywhere in the U.S. |
| Drug coverage | In most plans; cannot add a separate drug plan | In most plans; cannot add a separate drug plan |
| Monthly plan premium | Often $0, on top of Part B | Usually a premium, on top of Part B |
| Out-of-pocket caps (2027 CMS ceiling) | One in-network cap, up to $9,850 | In-network cap up to $9,850, plus a combined in-and-out-of-network cap up to $14,800 |
Sources: Medicare.gov compare plan types; Medicare.gov HMO and PPO pages; CMS CY 2027 MOOP calculations.
Two rows are identical, and they are the two people most often get wrong. Prior authorization is not an HMO thing. Medicare.gov’s general description of Medicare Advantage says “you may need to get approval (prior authorization) from your plan before it covers certain services or supplies,” and it says that about Medicare Advantage as a whole (Medicare.gov). A PPO frees you from referrals, not from approvals. The protection that applies to both: once a plan approves a course of treatment, “the approval must be valid for as long as the treatment’s medically necessary,” and the plan cannot make you get approval again for ongoing treatment it already approved.
And emergency coverage is not a PPO thing. An HMO member who has a heart attack in Georgia is covered. What the HMO member does not have is coverage for a routine follow-up visit in Georgia the next month.
How the out-of-pocket maximum works, and why a PPO has two
Every Medicare Advantage plan must have a yearly limit on what you pay for covered Part A and Part B services. “Once you reach your plan’s limit, you’ll pay nothing for covered services for the rest of the year” (Medicare.gov). Original Medicare has no such cap, which is one reason the Medigap market exists; the cap is one of the structural arguments for Medicare Advantage.
CMS sets the ceiling each year under 42 CFR 422.100(f), and it defines three bands a plan can choose from. The “mandatory” band is the highest cap allowed; the “lower” and “intermediate” bands are for plans that choose a lower cap. A PPO must have the in-network cap and a combined cap that counts in-network and out-of-network cost-sharing together, set at 1.5 times the in-network figure.
| MOOP band | 2026 in-network | 2027 in-network | 2026 combined (PPO) | 2027 combined (PPO) |
|---|---|---|---|---|
| Lower | $4,200 | $4,450 | $6,300 | $6,700 |
| Intermediate | $6,750 | $7,150 | $10,100 | $10,750 |
| Mandatory (highest allowed) | $9,250 | $9,850 | $13,900 | $14,800 |
Source: CMS, CY 2027 and CY 2026 MOOP and Cost Sharing Limit Calculations, Tables 1 to 4.
The 2027 in-network ceiling is $600 higher than 2026, a 6.49 percent increase at the mandatory band and about 5.9 percent at the other two, after a year in which the mandatory cap actually fell slightly (CMS, Table 5). Your plan’s own 2027 cap is on the Annual Notice of Change you should have received by September 30; we covered how to read that letter in what the Annual Notice of Change is and what to look for.
For an HMO member, the cap is one number and it is the worst-case year. For a PPO member, there are two worst cases. If you stay in network all year, the in-network cap holds. If you use out-of-network providers, that cost-sharing counts toward the combined cap, and a year with a lot of out-of-network care can cost up to the higher figure. The flexibility is real, and so is the price of using it.
What CMS lets each plan charge per visit
The cap and the copays are linked by design. Under the same regulation, a plan that picks a lower out-of-pocket cap is allowed to charge higher cost-sharing per service, and a plan at the highest cap is held to lower per-visit limits. CMS publishes the 2027 ceilings:
| 2027 copay limit | Lower MOOP plan | Intermediate MOOP plan | Mandatory MOOP plan |
|---|---|---|---|
| Primary care visit | up to $70 | up to $55 | up to $40 |
| Specialist visit | up to $95 | up to $75 | up to $60 |
| Coinsurance alternative | up to 50% | up to 40% | up to 30% |
Source: CMS, CY 2027 MOOP and Cost Sharing Limit Calculations, Primary Care Physician and Physician Specialist tables. These are the maximums CMS permits for in-network cost-sharing; most plans set their copays well below them, and your plan’s actual figures are in its Evidence of Coverage.
This is why “which has lower copays, HMO or PPO” is the wrong question. Copay levels follow the cap the plan chose, not the letters on the card. Two HMOs in the same county can sit in different bands. What the plan type governs is whether an out-of-network copay exists at all, and PPO out-of-network cost-sharing is not bound by these in-network limits.
Which costs more, an HMO or a PPO?
In a typical year, the PPO usually costs more per month and the HMO usually costs more in freedom. The honest comparison is a year’s total, not a premium.
Start with what does not change. Everyone on Medicare Advantage pays the Part B premium, $202.90 a month in 2026 (CMS.gov). A plan advertised at $0 has no monthly plan premium; it is not free coverage, and the Part B premium and the plan’s deductibles and copays still apply. A PPO’s plan premium is added on top of Part B.
Then add what you would actually use:
- Plan premium × 12. Zero for many HMOs; a real figure for most PPOs.
- Deductibles. Medical and drug, if the plan has them.
- Copays for your pattern of care. Primary care visits, specialist visits, labs, imaging, the per-day hospital copay if a stay is likely.
- Out-of-network visits, for a PPO. If you expect to see a specific doctor who is not in network, price that visit at the out-of-network rate, and count it toward the combined cap.
- The cap. The in-network cap for either type, and the combined cap for a PPO, is the ceiling on your bad year.
The annual Medicare cost estimator lets you enter a plan’s premium, deductibles and copays alongside the Part B premium and see the year’s total for a normal pattern of care and a heavy one. Run it twice, once for the HMO and once for the PPO you are weighing. The gap between the two totals is the price of the PPO’s flexibility, and only you know whether you would use it.
Which is better if you travel or live part of the year outside Florida?
This is where the HMO-versus-PPO question stops being abstract for Tampa Bay residents.
Both plan types cover emergency care, out-of-area urgent care and temporary out-of-area dialysis anywhere in the United States. Neither type covers routine care outside the country unless the plan adds a travel benefit; Medicare.gov notes that “plans generally don’t cover medical care outside the U.S.” and that some offer an extra benefit for emergency and urgent care abroad (Medicare.gov).
The difference is routine care while you are away. On an HMO, a scheduled follow-up with a cardiologist in another state is out of network and, outside the HMO-POS exceptions, generally not covered. On a PPO, that visit is covered at the out-of-network rate, provided the cardiologist participates in Medicare or accepts assignment. Some PPOs also have reciprocal network arrangements with the same carrier’s plans elsewhere; those are carrier-specific and should be confirmed with the plan, not assumed.
The second thing to check is your plan’s service area. A plan’s service area is the counties where it is offered, and if you are away from it for more than six months, most plans will disenroll you. We walked through that rule, and what travel coverage each type actually provides, in does Medicare Advantage cover you out of state.
If you spend summers in North Carolina and want a routine care relationship there, the PPO’s design is built for you, and its premium is what you pay for it. If your year is spent within reach of your Tampa Bay providers, the HMO’s design does not take anything from you that you would use.
What about SNPs and other plan types?
Two other designs appear in the Tampa Bay market and borrow from HMO and PPO rules.
A Special Needs Plan (SNP) is for people who qualify through a chronic condition, institutional residence, or both Medicare and Medicaid (a D-SNP). Medicare.gov’s comparison says a SNP structured as an HMO generally requires network providers and referrals, while one structured as a PPO does not, and that “all SNPs must offer Medicare drug coverage (Part D)” (Medicare.gov SNP). So a SNP is an HMO or a PPO with eligibility rules attached.
A Private Fee-for-Service (PFFS) plan lets you “go to any Medicare-approved provider or facility that accepts the plan’s payment terms,” and it is the one Medicare Advantage design where, if the plan has no drug coverage, you can add a separate Part D plan (Medicare.gov compare). PFFS plans are far less common than they once were, and “accepts the plan’s payment terms” is decided visit by visit by the provider.
Can you switch between an HMO and a PPO?
Yes, during an enrollment period, and no health questions are asked when you move between Medicare Advantage plans.
| Window | Dates | What you can do |
|---|---|---|
| Medicare Open Enrollment | October 15 to December 7 | Join, switch or drop a Medicare Advantage or drug plan, including HMO to PPO or PPO to HMO. New coverage starts January 1. |
| Medicare Advantage Open Enrollment Period | January 1 to March 31 | If you are already in a Medicare Advantage plan, one switch to another Medicare Advantage plan, or a return to Original Medicare with the option of a drug plan. Effective the first of the following month. |
| Special Enrollment Periods | Event-driven | Moving out of your plan’s service area, your plan leaving Medicare or your area, and other listed events each open a window. |
Sources: Medicare.gov, Joining a plan; Special Enrollment Periods. The enrollment window checker will tell you which of these applies to you today.
The asymmetry is in the other direction. Moving between an HMO and a PPO is a form; moving from either back to Original Medicare with a Medigap policy is an application. CMS’s Medigap guide lists the guaranteed issue situations in which a Medigap carrier must sell you a policy without health questions, including a plan leaving Medicare or your area, and two trial rights: joining Medicare Advantage at 65 and leaving within the first year, or dropping a Medigap policy to try Medicare Advantage for the first time and leaving within a year (CMS Product No. 02110, Section 3). Outside those situations, a Florida Medigap application after your six-month open enrollment window is medically underwritten and can be declined. We covered the mechanics in can you switch from Medicare Advantage to Medigap in Florida.
That asymmetry does not argue for or against Medicare Advantage. It argues for choosing between the HMO and the PPO carefully, because the switch you may not be able to make later is not the one between them.
HMO vs PPO in Tampa Bay
Three local facts shape the choice here.
The field is large. CMS’s landscape file lists 133 Medicare Advantage and Part D plan options in Hillsborough County for 2026 (CMS CY2026 Landscape). That means the HMO-or-PPO decision is a filter, not a final answer: it narrows 133 to a shorter list, and the work of matching your doctors, your drugs and your budget starts there. The 2027 landscape, released for Open Enrollment, will have its own count; your Annual Notice of Change tells you what your current plan did, and nothing about what the others did.
Your doctors decide more than the plan type does. Tampa Bay has several large health systems, and a given HMO may include one and not another. Before you weigh HMO against PPO, write down your primary care doctor, each specialist, your preferred hospital and your pharmacy, and check each name against the plan’s 2027 directory, then call the office. A PPO’s out-of-network allowance is a safety net for a doctor who is not listed; it is not a reason to skip the check.
Florida has a counselor with no product to place. Florida’s State Health Insurance Assistance Program is SHINE, run through the Department of Elder Affairs, and CMS lists it at (800) 963-5337 (CMS SHINE contact). SHINE counselors do not sell insurance. If you want a second, neutral reading of two plans side by side, that is who to call.
How to decide
- List your providers by name. Primary care, each specialist, your hospital, your pharmacy. Check every one against the 2027 directory of each plan you are considering.
- Count your months away. If you spend extended time outside the plan’s service area and want routine care there, the PPO’s design is built for it. If not, you would be paying for an allowance you do not use.
- Decide how you feel about a gatekeeper. An HMO’s primary care doctor and referral process is coordination to some people and friction to others. Neither reaction is wrong.
- Price the year, not the premium. Part B plus plan premium plus deductibles plus the copays for your pattern of care, for each plan. Then look at the cap for a bad year, and for a PPO, at both caps.
- Check prior authorization rules for the care you expect. They apply to both types and differ by plan.
- Confirm drug coverage inside the plan. You cannot add a stand-alone drug plan to an HMO or PPO.
- Decide by December 7. The plan must receive your request by then for January 1 coverage.
If you would like help running the comparison on real 2027 plans for your providers and your calendar, Virginia walks Tampa Bay families through it every fall, and it is an education conversation, not a pitch for one letter over the other. Schedule a time before Open Enrollment opens, and bring your provider list and your Annual Notice of Change.