Direct answer: The three plan types differ in two ways: whether they pay for out-of-network care, and whether you need a referral to see a specialist.
- An HMO usually covers only in-network care, except emergencies. It often requires a referral from your primary care doctor before you see a specialist.
- An EPO also covers only in-network care, except emergencies. It usually does not require referrals.
- A PPO pays for out-of-network care at a higher cost and does not require referrals.
The main difference between an HMO and an EPO is the referral. The main difference between an EPO and a PPO is out-of-network coverage.
Side-by-side comparison
| HMO | EPO | PPO | POS | |
|---|---|---|---|---|
| Non-emergency out-of-network care | Generally not covered | Not covered | Covered, at a higher cost | Covered, at a higher cost |
| Referral to see a specialist | Usually required | Usually not required | Not required | Usually required |
| Primary care doctor | Usually must choose one | Depends on the plan | Not required | Usually must choose one |
| Emergency care | Covered | Covered | Covered | Covered |
| Service area | May require you to live or work in it | Plan-specific | Plan-specific | Plan-specific |
Definitions follow HealthCare.gov's plan-types page. Individual plans can differ, so read the plan's Summary of Benefits and Coverage.
How an HMO works
A health maintenance organization contracts with a set group of doctors, hospitals and other providers. You generally pick a primary care doctor, who coordinates your care and gives referrals to specialists. If you see an out-of-network provider for non-emergency care, the plan generally pays nothing.
How an EPO works
An exclusive provider organization also pays only for in-network care, except in an emergency. Most EPOs let you book an in-network specialist without a referral. That makes an EPO a fit if you are comfortable staying in network but do not want the referral step.
How a PPO works
A preferred provider organization has a network, but it also pays part of the cost when you use providers outside it. You pay more out of network. An out-of-network provider can also bill you for the difference between their charge and what the plan allows (balance billing), except where federal surprise-billing protections apply. Out-of-network costs may also count toward a separate, higher deductible and out-of-pocket limit.
Which type should I pick?
Start with the doctors and hospitals you already use, not the acronym.
- Pick an HMO if every doctor you use is in its network and you are fine getting referrals.
- Pick an EPO if every doctor you use is in its network and you want to see specialists without referrals.
- Pick a PPO if you need a doctor or facility that is not in any HMO or EPO network, and you accept higher costs for that care.
- In every case, confirm each doctor on the exact plan ID, not just the insurance company name.
Network type and metal level are separate choices
Bronze, Silver, Gold and Platinum describe how you and the plan share costs. HMO, EPO and PPO describe the network rules. Depending on what is offered in your county, you can find several network types at each metal level. Choose the network for the care you use, then choose the metal level. See Bronze vs Silver vs Gold.
Emergencies and follow-up care
All three types cover emergency care. Under the No Surprises Act, what you pay for out-of-network emergency care is limited to your in-network cost sharing, and you cannot be balance-billed for those emergency services. Once you are stable, follow-up visits usually return to the plan's normal network rules. Ask about the follow-up, not only the ER visit.
Questions to ask a Polk County office before you enroll
- Are you in network for this exact plan ID for next year?
- Are you accepting new patients under that plan?
- Does this specialty need a referral on this plan?
- Which hospital do you admit to? Is that hospital in network on the same plan?
The same health system name can be in network on one plan and out of network on another. That applies to large Lakeland systems such as Lakeland Regional Health, Watson Clinic and Orlando Health Watson Clinic Lakeland Highlands Hospital, which opened in July 2026. Write down who confirmed each answer and on what date.
Medicare Advantage uses the same labels with different rules
Medicare Advantage HMOs and PPOs follow Medicare rules and can change their networks from year to year. See keeping your doctor when you switch Medicare plans.
List your doctors, hospitals and prescriptions, then call (863) 640-3102
Related reading
- How to keep your doctor when you change plans
- Check prescriptions before you enroll
- Provider and prescription check
- Lakeland ACA help
- Orlando Health and Watson Clinic insurance guide
Common questions
What is the main difference between an HMO and an EPO?
Referrals. Both generally cover only in-network care except emergencies. An HMO usually requires a referral from your primary care doctor to see a specialist; an EPO usually does not.
Does a PPO cover out-of-network doctors?
Yes, at a higher cost than in-network care and without a referral. Out-of-network providers can also bill you the difference between their charge and what the plan allows, except where federal surprise-billing protections apply.
Are emergencies covered out of network on an HMO or EPO?
Yes. Emergency care is covered, and the No Surprises Act limits what you pay for out-of-network emergency care to your in-network cost sharing. Follow-up visits after you are stable usually return to the plan's network rules.
Can I get a Silver HMO or a Gold PPO?
Yes. Network type and metal level are separate choices. Which combinations exist depends on the plans offered in your county.
Which plan type should I choose if I must keep a specific doctor?
Choose the plan where that doctor is in network for the exact plan ID. If no HMO or EPO includes the doctor, a PPO may cover the visits at a higher out-of-network cost.