PPO Insurance Explained: What It Is and How It Works

PPO stands for Preferred Provider Organization, and it's the most common type of health insurance plan in the employer market. About 47% of workers with employer coverage have a PPO, according to KFF's 2025 survey. The reason is simple: flexibility. You can see specialists without a referral, and you can go out of network if you're willing to pay more.

How a PPO Works

A PPO has a network of doctors, hospitals, and other providers who've agreed to charge negotiated rates. When you stay in network, you pay less. You can also see out-of-network providers, but you'll pay a larger share of the cost, and the total charges will be higher because there's no negotiated rate.

You don't need to pick a primary care physician. You don't need referrals to see a specialist. If you want to see a dermatologist or an orthopedist, you just book the appointment. This is the biggest practical difference between a PPO and an HMO.

What a PPO Costs

PPO premiums run higher than HMO or HDHP plans. The average annual premium for a single PPO through an employer is about $8,800, with workers paying roughly $1,400 of that. The average single deductible is around $1,523.

Most PPO plans have two separate deductibles: one for in-network care and a higher one for out-of-network. You might have a $1,500 in-network deductible and a $3,000 out-of-network deductible. Coinsurance also splits: 20% in-network, 40% or more out-of-network.

Who Should Pick a PPO

PPO plans make sense if you want to see specialists without waiting for referrals, if you travel frequently and might need care outside your home area, if you have existing relationships with doctors who aren't on HMO networks, or if you simply want the security of knowing out-of-network care is partially covered.

The trade-off is cost. You're paying higher premiums for that flexibility. If you rarely go out of network and don't mind getting referrals, an HMO or EPO will save you money.

PPO vs. Other Plan Types

Compared to an HMO, a PPO gives you more freedom but costs more. HMOs require a primary care physician and referrals, and generally don't cover out-of-network care. Compared to an EPO, a PPO adds out-of-network coverage at a higher premium. An EPO has no referral requirement but restricts you to in-network providers. Compared to an HDHP, a PPO has higher premiums but a lower deductible, which means you start getting cost-sharing from your insurer sooner.