Medicare Advantage HMO vs PPO in 2027: Costs, Networks & Which Is Better?

Choosing between a Medicare Advantage HMO and PPO could be more important than usual for 2027.

Major Medicare Advantage insurers are changing local service areas and, in some markets, moving toward tighter provider networks.

At the same time, Medicare Advantage remains widely available overall. CMS projects approximately 5,532 Medicare Advantage plans nationwide for 2027, with more than 99% of Medicare beneficiaries expected to have access to at least one Medicare Advantage option.

But national plan counts do not answer the question that matters most:

Should you choose an HMO or PPO?

The short answer is:

HMO: usually better for people comfortable staying within a defined provider network and who value coordinated care.

PPO: usually better for people who want more provider flexibility and are willing to accept potentially higher costs when going outside the network.

Here is how the two types differ in 2027.

Medicare Advantage HMO vs PPO 2027: Quick Comparison

Feature	HMO	PPO
Provider network	Generally stay in-network	In- and out-of-network care
Out-of-network routine care	Usually not covered	Usually covered at higher cost
Primary care doctor	Usually required	Generally not required
Specialist referral	Generally required	Generally not required
Prescription drugs	Usually included in MA-PD	Usually included in MA-PD
Best for	Network-based coordinated care	Provider flexibility
Main risk	Preferred provider may be outside network	Out-of-network costs may be much higher

What Is a Medicare Advantage HMO?

HMO means:

Health Maintenance Organization

A Medicare Advantage HMO generally uses a defined network of doctors, specialists, hospitals, laboratories and other providers.

For routine covered care, members generally use providers inside the plan’s network.

Important exceptions typically include:

emergency care;
urgent care; and
certain out-of-area dialysis services.

Some plans are HMO-POS plans, which may allow limited out-of-network services at a higher cost.

What Is a Medicare Advantage PPO?

PPO means:

Preferred Provider Organization

A PPO also has a provider network.

But members can generally receive Medicare-covered services outside that network.

The important catch is:

Out-of-network does not mean same price.

Using an out-of-network doctor or hospital may result in substantially higher copayments or coinsurance.

That flexibility is the main attraction of PPO coverage.

The Biggest Difference Is Your Provider Network

For most beneficiaries, provider access should be the first comparison.

HMO

An HMO generally expects you to receive routine medical care inside its network.

If your cardiologist, hospital or specialist is not included, routine services from that provider may not be covered.

PPO

A PPO generally allows you to stay in-network for lower costs or go outside the network and pay more.

But even a PPO does not mean every physician who accepts Original Medicare is automatically required to treat you under that PPO.

Always verify with the plan.

Why HMO vs PPO Matters More in 2027

Several major Medicare Advantage companies are changing their provider-network strategies for 2027.

Some insurers are reducing broader PPO availability or shifting toward plan designs with tighter provider networks.

That means a beneficiary who had several PPO choices in 2026 may have fewer comparable choices in 2027.

Your 2026 plan structure should therefore not be assumed to carry forward unchanged.

Medicare Advantage Choices Are Shrinking in Some Areas

The national Medicare Advantage market remains large.

However, local availability is changing.

KFF’s analysis of CMS plan data found that the average beneficiary has approximately:

28 Medicare Advantage prescription drug plans

available for 2027.

That compares with:

32 in 2026

KFF also found significant county-level variation.

The lesson is simple:

Medicare Advantage is local.

What happens nationally may have little resemblance to the specific HMO and PPO choices in your ZIP code.

Do HMO Plans Require a Primary Care Doctor?

Usually.

A Medicare Advantage HMO commonly requires members to select a:

primary care physician

or PCP.

The PCP can coordinate care and help manage referrals.

Some people prefer this structure.

Others find it restrictive.

Does a PPO Require a Primary Care Doctor?

Generally:

No.

PPO members usually have more freedom to arrange their own care.

Individual plan rules still matter.

HMO vs PPO Specialist Referrals

Another common difference involves specialist care.

HMO

You may need a referral before seeing certain specialists.

PPO

Referrals generally are not required.

This can matter if you regularly see:

cardiologists;
oncologists;
orthopedists;
endocrinologists;
neurologists; or
other specialists.

But always check the specific plan rather than relying entirely on the HMO/PPO label.

Prior Authorization Can Apply to Both

A PPO does not automatically eliminate prior authorization.

Medicare Advantage plans frequently require approval before covering certain:

procedures;
tests;
medical equipment;
therapies; or
other services.

That can occur in both HMOs and PPOs.

If prior authorization is important to you, compare the actual plan rules.

Which Is Cheaper: HMO or PPO?

There is no universal answer.

Costs depend on:

insurer;
county;
provider network;
benefits;
prescriptions;
hospital use; and
the individual plan.

HMOs often use tighter provider networks, which can help keep costs lower.

PPOs offer more flexibility but can charge more when members use out-of-network providers.

The biggest mistake is comparing only:

monthly premiums

instead of:

total yearly costs.

2027 Medicare Advantage Premiums

CMS projects the weighted average Medicare Advantage premium at:

$12 per month in 2027

compared with:

$14.37 in 2026

That’s a projected national decline of approximately:

16.5%

But this is a national average.

Your individual HMO or PPO could increase in price.

PPO’s Biggest Advantage: Out-of-Network Coverage

The strongest reason to choose a PPO is provider flexibility.

That may matter if you:

travel frequently;
spend time in multiple states;
want a particular specialist;
use multiple health systems; or
want options if a provider leaves the network.

However, check the actual out-of-network costs.

A PPO may have:

higher specialist coinsurance;
higher hospital costs;
separate out-of-network limits; or
a combined in/out-of-network maximum.

When an HMO May Be Better

Suppose all of your important providers are already in one HMO network.

That includes your:

family doctor;
cardiologist;
hospital;
pharmacy; and
major specialists.

If the HMO also offers lower costs, paying more for PPO flexibility may provide little benefit.

When a PPO May Be Better

A PPO can be more attractive if:

you frequently travel;
you see doctors across different hospital systems;
an important specialist is outside local HMO networks;
you spend part of the year elsewhere; or
provider freedom matters more than the lowest possible cost.

Example: HMO vs PPO

Suppose Linda is comparing two plans.

HMO

$0 plan premium
Primary doctor in-network
Local hospital in-network
Cardiologist out-of-network

PPO

$25 monthly premium
Primary doctor in-network
Cardiologist available out-of-network
Higher specialist cost sharing

If keeping the cardiologist is essential, paying more for the PPO could make sense.

If Linda is willing to use another cardiologist within the HMO network, the HMO may be the better value.

What Is HMO-POS?

HMO-POS means:

Health Maintenance Organization with Point-of-Service

It combines features of an HMO with limited out-of-network benefits.

The plan may let you receive certain services outside its network.

But you generally pay more.

An HMO-POS plan can be worth reviewing if you want some PPO-style flexibility without moving to a traditional PPO.

Prescription Drug Coverage

Most Medicare Advantage HMO and PPO plans include Part D prescription coverage.

These are known as:

MA-PD plans

If you’re enrolled in an HMO or PPO that includes drug coverage, you generally should not separately enroll in a standalone Part D plan.

For 2027, the defined-standard Part D deductible increases to:

$700

The defined-standard out-of-pocket threshold increases to:

$2,400

Drug coverage should therefore be part of your HMO vs PPO comparison.

Star Ratings Are Separate From Plan Type

An HMO can have a high CMS Star Rating.

So can a PPO.

For 2027, CMS awarded only:

15 MA-PD contracts

the top 5-star rating.

Do not assume PPO equals higher quality or HMO equals lower quality.

Star Ratings measure performance—not network structure.

What If Your Current Plan Is Ending?

If your current Medicare Advantage plan will disappear in 2027, you may be forced to compare HMO and PPO options.

Check:

provider networks;
hospitals;
prescription formularies;
referrals;
prior authorization;
maximum out-of-pocket limits; and
total annual costs.

Do not simply select the plan whose name looks most similar to your old coverage.

Medicare Open Enrollment 2027

Medicare Open Enrollment runs:

October 15 through December 7, 2026

During this period, eligible beneficiaries can generally switch:

HMO to PPO;
PPO to HMO;
one Medicare Advantage plan to another;
Original Medicare to Medicare Advantage; or
Medicare Advantage back to Original Medicare.

Most changes take effect:

January 1, 2027

Can You Switch After January 1?

People already enrolled in Medicare Advantage generally get another limited opportunity during:

Medicare Advantage Open Enrollment

from:

January 1 through March 31

During this period, you can generally make one permitted Medicare Advantage change.

Do not use this as an excuse to make a rushed fall decision.

HMO vs PPO for Frequent Travelers

A PPO generally provides more flexibility for routine care outside your immediate network.

That can be helpful for people who travel regularly.

However, it does not mean every out-of-state provider automatically participates.

Before choosing a PPO for travel, check:

network locations;
out-of-network cost sharing;
whether providers accept the plan; and
authorization requirements.

HMO vs PPO for Snowbirds

Someone who spends winters in Florida and summers elsewhere may value PPO flexibility.

But compare the actual plan network.

Some plans have broader affiliated networks or visitor arrangements that can change the calculation.

Ask:

Are your doctors in both locations covered?
What will you pay outside the network?
Is prescription coverage convenient in both states?
Does the HMO offer a travel program?

Chronic Health Conditions

People with complex or chronic health conditions should pay particular attention to network access.

Make a list of every provider you use:

primary care;
specialists;
hospital;
therapy;
laboratories;
imaging;
medical equipment;
infusion center; and
pharmacy.

Verify each one before enrolling.

What If Your Doctor Leaves the Network?

Networks can change.

If an important doctor or hospital leaves your plan, contact both:

your insurer; and
Medicare

to understand your options.

Certain significant network changes may result in enrollment protections, but not every individual provider departure automatically creates a Special Enrollment Period.

How to Compare HMO and PPO Plans

Question	Why It Matters
Are my doctors in-network?	Determines access and often cost
Is my hospital in-network?	Hospital charges can be significant
What is the premium?	Part of total cost
What is the maximum out-of-pocket amount?	Measures financial exposure
What is out-of-network cost sharing?	Critical for PPO users
Are referrals required?	Can affect specialist access
What requires prior authorization?	May affect timing of care
Are my drugs covered?	Drug costs may outweigh premium differences
What is the Star Rating?	Provides a CMS quality measure
What changed from 2026?	Networks and benefits can change annually

Verify Providers Twice

For an especially important doctor or hospital:

Check the plan’s 2027 provider directory.
Call the plan.
Consider calling the provider directly.
Record who confirmed participation.

Provider-network mistakes can be expensive.

HMO vs PPO vs Original Medicare

If neither HMO nor PPO options fit your needs, Medicare Advantage is not your only choice.

You can also consider:

Original Medicare

potentially combined with:

Part D; and
Medigap.

Original Medicare generally offers broader provider choice among providers who accept Medicare.

However, Medigap enrollment rules can make leaving Medicare Advantage a more complicated decision.

Understand your Medigap rights before switching.

Does IRMAA Change Based on HMO or PPO?

No.

Medicare IRMAA is based on income.

Choosing an HMO instead of a PPO does not eliminate:

Part B IRMAA; or
Part D IRMAA.

Higher-income Medicare beneficiaries can owe IRMAA regardless of Medicare Advantage plan type.

Which Is Better in 2027?

Consider an HMO if:

your doctors are all in-network;
you prefer coordinated care;
you rarely need out-of-network care;
cost control matters more than maximum flexibility; and
the plan’s prescription coverage works well.

Consider a PPO if:

you value provider choice;
you travel frequently;
you use multiple hospital systems;
an important provider is outside an HMO network; or
you are comfortable paying more for flexibility.

Frequently Asked Questions

What is the main difference between Medicare Advantage HMO and PPO?

HMOs generally require members to use network providers for routine care. PPOs generally allow out-of-network Medicare-covered services at a higher cost.

Is HMO cheaper than PPO?

HMOs can be less expensive because of tighter networks, but actual costs vary significantly by plan and county.

Can I see an out-of-network doctor with PPO?

Generally yes, but you usually pay more.

Can I see an out-of-network doctor with HMO?

Generally not for routine services, except for specific plan provisions or situations such as emergency or urgent care.

Do HMOs require referrals?

Generally yes for specialist care.

Do PPOs require referrals?

Generally no, although specific plan rules should always be checked.

Can a PPO require prior authorization?

Yes.

Are PPO plans going away in 2027?

No. PPO plans remain available in many areas. However, several large insurers are reducing or changing some broader-network offerings.

Which is better for travel?

PPO coverage generally provides greater flexibility for non-emergency out-of-network care.

Can I change HMO to PPO during Open Enrollment?

Yes, if an appropriate PPO is available where you live and you meet enrollment requirements.

The HMO vs PPO decision matters more than the acronym.

For 2027:

HMO = tighter provider network, coordinated structure and generally less out-of-network flexibility.

PPO = broader provider flexibility, including out-of-network coverage, usually at a higher cost when you leave the network.

The 2027 Medicare Advantage market is also changing.

Insurers are changing provider networks, service areas and plan offerings, while KFF finds the average beneficiary has fewer MA-PD choices than in 2026.

Before December 7, verify:

your doctors;
hospitals;
medications;
network rules;
specialist access;
prior authorization;
out-of-network costs; and
annual maximum out-of-pocket spending.

The best Medicare Advantage plan for 2027 is not automatically an HMO or automatically a PPO.

It is the plan whose network, cost structure and coverage best match the way you actually use health care.