Medicare Advantage HMO vs. PPO: How to Choose in 2026

HMO vs. PPO at a glance

HMO (Health Maintenance Organization) and PPO (Preferred Provider Organization) are the two most common types of Medicare Advantage (Part C) plans. Both are offered by private insurers approved by Medicare, and both must cover everything Original Medicare (Parts A and B) covers. The difference is in how you access care.

The shorthand: HMOs trade flexibility for lower, more predictable costs, while PPOs charge more in exchange for the freedom to see out-of-network providers. Neither is 'better' in the abstract — it depends on your doctors, your travel habits, and your budget.

• HMO: care generally limited to in-network providers; referrals to specialists are common; usually lower premiums and copays.
• PPO: you can see out-of-network providers for covered services, but you usually pay more; referrals generally not required.

How Medicare Advantage HMO plans work

With an HMO, you generally must get covered care from doctors, hospitals, and other providers in the plan's network — except for emergency care, out-of-area urgent care, or temporary out-of-area dialysis. If you go outside the network for routine care, the plan typically won't pay, and you could owe the full cost yourself.

Many HMOs ask you to choose a primary care provider (PCP) who coordinates your care, and you may need a referral from that PCP before seeing a specialist. Referral rules vary by plan and have been tightening for some insurers — for example, certain UnitedHealthcare Medicare Advantage HMO and HMO-POS plans began requiring PCP referrals for many specialist services in 2026. Always check your specific plan's rules.

Some HMOs are Point-of-Service (HMO-POS) plans that let you get certain services out-of-network for a higher copayment or coinsurance. Most Medicare Advantage HMOs include Part D prescription drug coverage, but not all do — confirm before enrolling.

How Medicare Advantage PPO plans work

A PPO has a network too, but it's more flexible. You pay less when you use in-network providers and facilities, and you can still go to out-of-network providers for covered services — you'll just usually pay a higher share of the cost. This can matter if you split time between two states or want to keep a specialist who isn't in-network.

PPOs generally do not require referrals to see specialists, which appeals to people who want to manage their own care. If you want Medicare drug coverage with a PPO, you must enroll in a PPO that includes Part D; you generally can't add a standalone drug plan to a Medicare Advantage PPO that already offers drug coverage.

Costs: what you still pay either way

No matter which plan type you pick, you must keep paying your Part B premium — $202.90 per month in 2026 — and Medicare Advantage plans may charge an additional monthly premium on top of that (some charge $0). Higher earners pay an income-related surcharge (IRMAA) on top of the standard Part B premium.

A major advantage of Part C over Original Medicare is the annual out-of-pocket maximum (MOOP) for Part A and Part B services. For 2026, an HMO's in-network out-of-pocket limit can be no higher than $9,250. For PPOs, the cap can be no higher than $9,250 for in-network care and $13,900 for in- and out-of-network care combined. Many plans set their limits lower, and these caps don't include your Part D drug costs.

Because out-of-network care counts toward a higher combined limit on a PPO, the flexibility can get expensive if you use it often. Compare each plan's premiums, copays, and out-of-pocket limit on the official Medicare Plan Finder, since these vary by plan and by where you live.

How to choose between HMO and PPO

If you already have a Medicare Advantage plan, the Medicare Advantage Open Enrollment Period (January 1 – March 31) lets you make one change — switch to a different Medicare Advantage plan or return to Original Medicare, with or without a drug plan. The change takes effect the first day of the following month.

• Lean HMO if: your preferred doctors are in-network, you want the lowest, most predictable costs, and you don't mind referrals or staying local.
• Lean PPO if: you want to see specialists without referrals, you travel or live in two areas, or you want the option to go out-of-network even at a higher cost.
• Always confirm your specific doctors and hospitals are in-network, check whether referrals are required, and verify the plan includes Part D if you take prescriptions.
• Check each plan's premium, copays, and out-of-pocket maximum for your ZIP code — benefits and networks are set by the insurer and change every year.