The main difference between an EPO and a PPO is what happens when you see a doctor outside your plan’s network. A PPO (Preferred Provider Organization) covers out-of-network care at a higher cost to you. An EPO (Exclusive Provider Organization) doesn’t cover out-of-network care at all, except in emergencies. That single distinction drives most of the other differences between the two plan types, from monthly premiums to how freely you can choose providers.
How Out-of-Network Coverage Works
With a PPO, you can see any doctor or specialist you want, whether they’re in the plan’s network or not. In-network care costs less through lower copays and coinsurance, but out-of-network visits are still partially covered. You’ll pay more out of pocket, but the plan shares the cost. This also makes PPOs travel-friendly: if you need non-emergency care while out of state, your plan still helps pay for it.
An EPO restricts you to its network for all non-emergency care. If you see a provider outside that network, you pay the full cost yourself. The exception is true emergencies and urgent care, which are covered regardless of network. But routine visits, specialist appointments, and planned procedures all need to happen within the EPO network. If you travel frequently or split time between two cities, this is a meaningful limitation.
Referrals and Specialist Access
Both EPOs and PPOs give you direct access to specialists without a referral, which sets them apart from HMO plans. With a PPO, you generally don’t even need to choose a primary care physician. You can go straight to a dermatologist, orthopedist, or any other specialist whenever you want.
Many EPO plans do ask you to select a primary care physician, but they still don’t require that doctor to refer you before seeing a specialist. The key requirement is that the specialist you choose is within the EPO’s network. As long as they are, you can book directly.
Network Size
PPO networks tend to be the largest of any plan type. Because PPOs also cover out-of-network care, the practical pool of providers available to you is essentially unlimited, though going outside the network costs more.
EPO networks are typically larger than HMO networks but smaller than PPO networks. Before enrolling in an EPO, it’s worth checking whether your current doctors, preferred hospitals, and any specialists you see regularly are all in-network. Since out-of-network care isn’t covered, a gap in the network could mean switching providers or paying entirely out of pocket.
Monthly Premiums and Costs
EPO plans generally have lower monthly premiums than PPOs. The tradeoff is straightforward: you give up the flexibility to go out of network, and in return, your plan costs less each month. PPOs charge higher premiums because they’re covering a broader range of providers and absorbing some of the cost when you go outside the network.
The cost-sharing structure within the network (copays, coinsurance, deductibles) can look similar between the two plan types and varies significantly from one insurer to another. The premium difference is where most people feel the gap. If you rarely see specialists outside a single health system and don’t travel much, an EPO’s lower premiums may save you money without changing your day-to-day care. If you value the option to see any provider anywhere, the higher PPO premium buys that freedom.
How Popular Each Plan Type Is
PPOs are by far the most common employer-sponsored health plan in the United States. According to KFF’s 2025 Employer Health Benefits Survey, 46% of covered workers are enrolled in a PPO. EPOs are far less common. In the survey’s methodology, EPO enrollment is small enough that it gets grouped with HMO plans, which together account for about 12% of covered workers. That said, EPOs have been growing as employers look for ways to manage health care costs while still offering plans that don’t require referrals.
Which Plan Fits Your Situation
Choosing between an EPO and PPO comes down to how you actually use health care. A PPO makes sense if you see multiple specialists, some of whom may not be in a single network, or if you travel regularly and want coverage wherever you go. It’s also the safer pick if you’re new to an area and haven’t established relationships with local providers yet.
An EPO works well if your doctors are already within the plan’s network, you get most of your care locally, and you’d rather pay a lower premium each month. The lack of referral requirements gives you flexibility within the network, and for people who don’t need out-of-network access, the savings can be substantial over a year.
Before enrolling in either plan, check the provider directory carefully. Look up not just your primary care doctor but any specialists, labs, imaging centers, and hospitals you’ve used in the past year. With a PPO, a missing provider costs you more. With an EPO, a missing provider costs you everything.