A PPO (Preferred Provider Organization) offers more flexibility than an HMO. You have a network of "preferred" providers who offer the plan's best negotiated rates, but you're generally free to see any licensed provider, in or out of network, without a referral from a primary care physician.
- No referral is required to see a specialist.
- In-network care costs less out of pocket than out-of-network care.
- Out-of-network care is usually still covered, just at a lower reimbursement rate and higher cost to you.
Because of that flexibility, PPOs typically carry higher premiums than HMOs or EPOs. You're paying for the freedom to go outside the network when you want to, whether that's seeing a specialist directly or keeping a long-time doctor who isn't in the plan's network.
A frequent point of confusion is thinking out-of-network care is free or fully covered. It's usually covered at a reduced percentage, and out-of-network providers can also bill you for the difference between their charge and what the plan pays, known as balance billing.