HMO vs PPO vs EPO vs POS (and where HDHPs fit): health plan types compared
The plan type tells you which doctors you can use and how. HMOs and EPOs generally cover only in-network care (except emergencies). PPOs also pay for out-of-network care, at a higher cost, without referrals. POS plans cost less in network and require a primary-care referral to see a specialist. An HDHP isn't a network type at all: it's a high-deductible cost design (which can be an HMO, PPO or EPO) that lets you open a Health Savings Account.
When you compare plans on HealthCare.gov, a state Marketplace or through an employer, every plan is labeled with a network type. Two plans with the same premium can work very differently day to day, so it's worth understanding the label before you look at price.
The four main network types
| Type | Out-of-network care covered? | Referral to see a specialist? | Typically good for |
|---|---|---|---|
| HMO (Health Maintenance Organization) | Generally no, except emergencies | Often required | People happy to use one network and a primary-care doctor who coordinates care |
| EPO (Exclusive Provider Organization) | No, except emergencies | Depends on the plan | People whose doctors are all in the network and who want fewer gatekeeping rules |
| POS (Point of Service) | Depends on the plan; in-network costs less | Yes, from your primary-care doctor | People who want a primary-care "home base" with some flexibility |
| PPO (Preferred Provider Organization) | Yes, at a higher cost | No | People who want to keep specific out-of-network doctors or see specialists directly |
Definitions summarized from HealthCare.gov's plan-type descriptions. Always read the specific plan's Summary of Benefits and Coverage, because rules vary by insurer.
HMO
HealthCare.gov describes an HMO as a plan that usually limits coverage to doctors who work for or contract with the HMO, and generally won't cover out-of-network care except in an emergency. An HMO may require you to live or work in its service area. HMOs often focus on prevention and coordinated care.
EPO
An EPO covers services only if you use doctors, specialists or hospitals in the plan's network, except in an emergency. Unlike many HMOs, some EPOs let you see in-network specialists without a referral. Check the plan documents.
POS
A POS plan charges you less when you use network providers and requires a referral from your primary-care doctor to see a specialist.
PPO
A PPO charges less when you use network providers, but you can use out-of-network doctors and hospitals without a referral for an additional cost. Out-of-network care usually has its own, higher deductible and out-of-pocket limit, and out-of-network providers may bill you for the difference between their charge and what the plan pays (outside the emergency situations protected by federal law).
Where does an HDHP fit?
A high-deductible health plan (HDHP) describes the cost-sharing, not the network. For 2027, the IRS defines an HSA-qualified HDHP as a plan with a deductible of at least $1,750 (self-only) or $3,500 (family) and an out-of-pocket maximum of no more than $8,700 (self-only) or $17,400 (family). Starting in 2026, Bronze and Catastrophic plans available through a Marketplace are also treated as HSA-compatible. An HDHP can be built on an HMO, EPO or PPO network. See our HDHP and HSA guide.
Emergencies are protected on every plan type
Under the federal No Surprises Act, most plans must cover emergency services without prior authorization, and out-of-network emergency care can't be billed at more than your in-network cost-sharing. That means "no out-of-network coverage" in an HMO or EPO doesn't apply to a true emergency.
How to choose
- List your must-keep doctors, hospitals and prescriptions. Check each one in the plan's provider directory and drug list (formulary) before you enroll.
- Decide how much you value flexibility. If you travel, live in two places or see out-of-network specialists, a PPO's flexibility may be worth a higher premium.
- Compare total yearly cost, not just the premium. Use our total cost calculator with each plan's premium, deductible, copays and out-of-pocket maximum.
- Remember the metal tier is separate. You can find HMOs, PPOs and EPOs at every metal level, depending on what's sold in your area.
Frequently asked questions
Is a PPO always better than an HMO?
No. A PPO gives you more freedom to see out-of-network doctors without referrals, but it often has a higher premium. If all your doctors are in an HMO's network, the HMO may cost less overall for the same care.
Do I need a referral in an EPO?
It depends on the plan. EPOs only cover in-network care (except emergencies), but many don't require referrals to see in-network specialists. Check the plan's Summary of Benefits and Coverage.
Is an HDHP a type of network?
No. An HDHP is a cost-sharing design with a higher deductible. It can use an HMO, EPO or PPO network. HSA-qualified HDHPs, and since 2026 Marketplace Bronze and Catastrophic plans, let you contribute to a Health Savings Account.
Will an HMO cover me in an emergency out of network?
Yes. Federal rules require most plans to cover emergency services out of network at in-network cost-sharing, without prior authorization.
Where can I see which plan types are sold in my area?
Use HealthCare.gov's plan preview tool, your state's Marketplace website, or ask a Marketplace-registered agent or broker. Availability varies by county.
Sources
- HealthCare.gov: Health insurance plan & network types (accessed October 28, 2026)
- IRS Rev. Proc. 2026-24: 2027 HSA and HDHP limits (PDF) (accessed October 28, 2026)
- IRS: Guidance on new HSA benefits under the One, Big, Beautiful Bill (Notice 2026-05) (accessed October 28, 2026)
- CMS: No Surprises Act, ending surprise medical bills (accessed October 28, 2026)
- HealthCare.gov: Health plan categories (Bronze, Silver, Gold & Platinum) (accessed October 28, 2026)