When employees shop for individual health plans — whether during Open Enrollment or while selecting coverage through an ICHRA — they quickly run into an alphabet soup of acronyms: HMO, PPO, EPO, POS. Network type is one of the biggest drivers of cost, flexibility, and overall experience, yet it’s often one of the least understood parts of choosing a plan.
This guide breaks down the differences in clear, practical terms so employees can select a network that matches their needs, and employers and brokers can help them navigate the options with confidence.
First: Why network type matters
Network type determines:
- Which doctors and hospitals are covered
- How much flexibility someone has when seeking care
- Whether referrals are required before seeing a specialist
- How much the plan costs, both in premiums and out-of-pocket spending
In short: even two plans from the same carrier, with similar deductibles, can behave very differently depending on the network type.
The different types of health insurance networks
Here’s a look at the four different types of health insurance networks.
1. Health maintenance organization (HMO): Lower cost, more structure
An HMO centers care around a Primary Care Physician (PCP). The PCP becomes the member’s home base for most health needs, including referrals to specialists.
Key features:
- PCP required
- Specialist visits typically require referrals
- No out-of-network coverage (except emergencies)
- Usually the lowest premiums
- Often smaller or more curated provider networks
Modern HMOs sometimes relax referral requirements, but the defining characteristic remains: care generally must stay within the HMO network.
Best fit for: Individuals who want lower premiums and don’t mind a more structured care model—or who mainly use in-network providers already.
2. Preferred provider organization (PPO): Higher flexibility, higher costs
A PPO offers the most flexibility of any network type.
Key features:
- No PCP requirement
- No referrals needed
- Out-of-network care allowed (at a higher cost)
- Larger provider networks
- Typically the highest premiums
Because PPOs cover both in-network and out-of-network providers, they’re often attractive to people who travel frequently, have existing specialists, or value maximum choice.
Best fit for: People who prioritize provider choice and are willing to pay more for convenience and flexibility.
3. Exclusive provider organization (EPO): In-network focus with added flexibility
EPOs are increasingly common on the ACA marketplace, and often strike a balance between HMO and PPO.
Key features:
- No PCP or referrals required
- No out-of-network coverage (except emergencies)
- Lower premiums than PPOs
- Moderate-sized networks (varies by state and carrier)
Think of an EPO as a PPO without out-of-network benefits. You get the autonomy to see specialists directly, but only if they’re in the network.
Best fit for: Individuals who want flexibility but don’t need out-of-network access, and who prefer a lower premium than a PPO.
4. Point of service (POS): A hybrid option with referral requirements
POS plans plan blends HMO and PPO features.
Key features:
- PCP required
- Referrals needed for specialists
- Out-of-network care allowed at higher cost
- Premiums often between HMO and PPO levels
POS plans are less common in today’s individual market but still appear in some regions.
Best fit for: Those who like having a PCP quarterback their care but want the back-up option of seeing out-of-network providers if necessary.
How network types affect cost
Across the individual market, network type is a major driver of premiums:
- HMO = lower premiums because care is coordinated within a narrower network
- PPO = higher premiums because the plan covers broader access and out-of-network care
- EPO and POS = middle ground, varying by carrier and region
For many ICHRA users, cost and network breadth must be balanced with their preferred providers—and the availability of certain network types can vary significantly by state.
What is the best type of network?
Realistically speaking, there’s no “best” network type. The choice depends on the individual, their preferences and budget, and how they use healthcare:
- HMOs tend to work best for people who appreciate structure and lower costs.
- PPOs often work best for people who want maximum autonomy.
- EPOs generally work best for people who want direct access to specialists without paying PPO-level premiums.
- POS typically plans work best for people who like having a PCP but want some out-of-network flexibility.
Understanding how network types and ICHRA work
When employees choose a plan through an ICHRA, network type can significantly affect both cost and satisfaction. Because employees shop on the individual market—and networks differ widely by region—brokers and HR teams should encourage employees to:
- Check whether their preferred doctors are in-network
- Compare HMO vs. EPO vs. PPO pricing in their rating area
- Think about how often they need specialty care
- Consider whether out-of-network access is important
The good news? Zorro’s plan recommendation tools and onboarding guidance help employees evaluate these differences—no insurance jargon required.
In conclusion
HMO, PPO, EPO, and POS networks each offer a different balance of cost, flexibility, and provider choice. Understanding these differences empowers employees to choose plans that fit their needs, and helps employers and brokers support more confident decision-making in an ICHRA environment.
