- PPOs offer the most flexibility, including some out-of-network coverage, usually at a higher premium.
- HMOs usually require a primary care doctor and referrals but cost less.
- EPOs need no referrals, but non-emergency out-of-network care usually isn't covered.
- If you travel or want specific specialists, network type matters more than premium.
Two plans with the same deductible can feel completely different depending on the network. Here's what the letters mean.
PPO: Preferred Provider Organization
You can see any in-network provider without a referral, including specialists. Most PPOs also pay something toward out-of-network care, at a higher cost to you. Expect higher premiums in exchange for flexibility.
HMO: Health Maintenance Organization
You choose a primary care physician who coordinates your care and gives referrals to specialists. Out-of-network care generally isn't covered except in emergencies. Premiums are typically lower.
EPO: Exclusive Provider Organization
A middle ground. Usually no referrals are needed, but you must stay in network for non-emergency care. EPO networks range from narrow and local to broad.
POS: Point of Service
A hybrid. Like an HMO you have a primary care doctor and referrals, but like a PPO there's some out-of-network coverage.
Which fits you?
- You travel for work (truckers, travel nurses, consultants): favor a PPO or a plan with a national network.
- You want specific specialists or a particular hospital system: confirm they're in network first, then choose the network type.
- You're healthy, cost-focused and happy with local doctors: an HMO or EPO may offer the best value.
- You have kids with several doctors: check every provider. Narrow networks surprise families most often.
Advisor tip: Emergency care is covered in network and out of network on ACA plans. Follow-up care after you're stable may not be, which matters if you get sick far from home.
Luis Ruiz is a licensed health insurance advisor (NPN 22256582) based in Orlando, Florida, and licensed in all 50 states. He helps self-employed people, business owners and families compare private and ACA coverage. More about Luis.
This guide is general information, not legal, tax or individualized insurance advice. Rules change, so always confirm details for your situation. Last reviewed October 1, 2026.