2026-04-01 · personal, health, guide, comparison
Updated: 2026-09-13
By InsuraFAQ Editorial Team · Reviewed for accuracy
Types of Health Insurance Plans Explained
Key takeaways
- HMO, PPO, EPO, and POS labels describe common network and referral patterns, but each plan has its own rules.
- A plan network can affect which doctors and facilities are covered and what you pay; confirm the details in the plan documents before enrolling.
- An HDHP can make a person eligible to contribute to an HSA only when the person meets the IRS eligibility rules.
- Compare the premium, deductible, out-of-pocket limit, network, prescription coverage, and referral rules together instead of choosing by plan label alone.
Who This Is For
This guide is for anyone comparing health plan options through an employer or the Marketplace. It explains common labels, but it cannot replace the specific plan documents. HealthCare.gov advises shoppers to check a plan’s provider directory, covered-drug list, and Summary of Benefits and Coverage before choosing a plan.
A note before you compare plan types
Plan names are useful shorthand, not guarantees. A plan can have its own network, referral, cost-sharing, and out-of-network rules. HealthCare.gov describes the common HMO, PPO, EPO, and POS patterns, but says to review the individual plan details. If keeping a doctor or prescription matters to you, verify it directly with the plan and keep a record of the answer.
HMO (Health Maintenance Organization)
An HMO commonly focuses coverage on a local network of doctors and facilities. Some HMO plans require a primary care provider to coordinate care or make specialist referrals; the plan documents explain when a referral is required. Except for emergency care and other plan-defined situations, out-of-network care may not be covered.
What to check: Confirm the primary care and specialist referral rules, the provider directory, and the coverage for care received away from home.
PPO (Preferred Provider Organization)
A PPO commonly lets members use providers outside its network, but the member may pay more for that care. Many PPOs do not require referrals for specialists, although the rules can differ by plan. Out-of-network benefits do not mean every provider accepts the plan or that the plan pays the full charge.
What to check: Compare in-network and out-of-network deductibles, coinsurance, and any balance-billing exposure before assuming an out-of-network visit is affordable.
EPO (Exclusive Provider Organization)
An EPO commonly covers care only within its network except for emergencies. Many EPOs do not require referrals for specialists, but the network and referral rules are plan-specific.
What to check: Make sure the plan network includes the doctors, facilities, and prescriptions you expect to use.
POS (Point of Service)
A POS plan can combine network rules with a primary care provider or referral process and may include some out-of-network coverage. The amount the plan pays, whether a referral is needed, and the consequences of skipping one depend on the plan.
What to check: Ask for the referral and out-of-network benefit rules in writing if specialist access is important to you.
HDHP (High Deductible Health Plan) and HSA eligibility
An HDHP is a plan that meets IRS deductible and out-of-pocket-limit requirements for a particular year. The IRS updates those limits, so use current IRS guidance rather than relying on a prior-year dollar figure. A person generally must be covered by an eligible HDHP and meet other IRS conditions to contribute to an HSA.
HSA contributions can receive federal tax advantages when used under the IRS rules, including tax-free distributions for qualified medical expenses. HSA funds generally remain in the account until used; eligibility and tax treatment can depend on the account holder’s coverage and circumstances. See our HSA vs FSA guide for a general comparison.
What to check: Confirm that the specific plan is HSA-eligible and review the current IRS rules before opening or funding an HSA.
Plan Type Comparison
The table describes common patterns, not promises. The Summary of Benefits and Coverage and plan contract control.
| Feature | HMO | PPO | EPO | POS | HDHP |
|---|---|---|---|---|---|
| Network pattern | Usually network-focused | May include out-of-network benefits | Usually network-focused | May combine network care with out-of-network benefits | Can use different network structures |
| Referral rule | May require one | Often no referral, but check | Often no referral, but check | May require one | Depends on the underlying plan |
| Out-of-network rule | Often limited outside emergencies | May pay part of covered out-of-network care | Often limited outside emergencies | May pay part of covered out-of-network care | Depends on the underlying plan |
| Cost-sharing | Varies by plan | Varies by plan | Varies by plan | Varies by plan | Must meet current IRS HDHP requirements to support HSA eligibility |
| Best comparison step | Check providers and referral rules | Compare out-of-network costs | Check the full network | Check referral and out-of-network rules | Confirm HSA eligibility and deductible exposure |
How to Choose the Right Plan
Start with the plan documents rather than the label. Compare the premium, deductible, out-of-pocket maximum, copays or coinsurance, network, prescription formulary, and referral rules for the exact options available to you. The Marketplace offers a Summary of Benefits and Coverage that can help you compare plans on a consistent format.
Are your doctors, facilities, and prescriptions covered? Use the plan directory and drug list, then call the plan or provider if you need confirmation. Provider directories and coverage rules can change.
Could you afford the deductible and out-of-pocket limit? A lower monthly premium can come with more cost when you receive care. Consider a low-use year and a higher-use year before choosing.
Do you need an HSA? Only a plan that meets the current IRS requirements can support HSA contributions, and personal eligibility rules also apply.
Do you need routine vision or dental care? Marketplace medical plans may not include routine adult vision or dental care. Check the plan details and consider separate coverage only if it fits your needs.
For help comparing specific plans, see our guide on how to compare insurance quotes.
Frequently asked questions
How many types of health insurance plans are there?
Health plans use several common labels, including HMO, PPO, EPO, POS, and HDHP. The labels do not replace the specific network, referral, and cost-sharing terms of the plan you are considering.
What is the cheapest type of health insurance plan?
There is no universally cheapest plan type. Compare the premium with the deductible, out-of-pocket limit, expected use of care, and covered providers and prescriptions.
Can I see any doctor with a PPO?
A PPO may provide some out-of-network benefits, but the amount paid and your share of the cost depend on the plan. Check the provider directory, benefit summary, and out-of-network rules before scheduling care.
What is an HSA and who can open one?
An HSA is a tax-advantaged account for qualified medical expenses. IRS Publication 969 explains the coverage and eligibility requirements for making HSA contributions.
Can I switch plan types during the year?
Enrollment opportunities depend on whether you have employer coverage, Marketplace coverage, or another arrangement. Review your plan or Marketplace rules for the enrollment period and any qualifying life events.
Next steps
- Review plan options through your employer or the Health Insurance Marketplace.
- Check whether your doctors and prescriptions are covered by plans you are considering.
- For how network structure affects doctor access and out-of-network coverage, see health insurance networks.
- Use our health insurance enrollment guide for step-by-step signup instructions.
- Read the insurance terms glossary if any terms in this guide are unfamiliar.
- Learn about deductibles to better understand HDHP cost-sharing.