A point of service (POS) health insurance plan is a hybrid that combines features of HMO and PPO plans. You get a primary care doctor who coordinates your care and refers you to specialists (the HMO side), but you also have the option to see out-of-network providers at a higher cost (the PPO side). This blend of structure and flexibility is what makes POS plans distinct.
How a POS Plan Works
When you enroll in a POS plan, you choose a primary care provider (PCP). This doctor becomes your home base for medical care. Need to see a dermatologist, cardiologist, or any other specialist? Your PCP has to submit a referral before you can schedule that appointment. This gatekeeper role is identical to how an HMO operates.
Where a POS plan breaks from the HMO model is what happens when you want care outside the plan’s network. An HMO typically won’t cover out-of-network care at all, except in emergencies. A POS plan will cover it, but you’ll pay significantly more out of pocket. So at every “point of service,” you’re essentially choosing between the lower-cost in-network path and the higher-cost out-of-network option.
In-Network vs. Out-of-Network Costs
Staying in-network with a POS plan means lower copays, smaller deductibles, and reduced coinsurance. The plan is designed to reward you financially for using its preferred doctors and hospitals. Going out of network flips all of those numbers: higher deductibles, higher coinsurance, and often a separate (and larger) out-of-pocket maximum.
Many POS plans also cap what they’ll pay for out-of-network services. If a provider charges more than your plan’s maximum allowable amount, you’re responsible for the difference on top of your regular cost-sharing. This is called balance billing, and it can add hundreds or even thousands of dollars to a single visit or procedure. Before seeing an out-of-network provider, it’s worth calling both the provider’s office and your insurer to understand what you’d actually owe.
A rough way to think about it: in-network care on a POS plan feels like being on an HMO. Out-of-network care feels like being on a PPO, but often with steeper cost-sharing than a standard PPO would charge.
How POS Plans Compare to HMOs and PPOs
The three plan types sit on a spectrum of flexibility versus cost. Here’s how they stack up:
- HMO: Lowest premiums. Requires a PCP and referrals. Little or no out-of-network coverage. Best for people comfortable staying within a defined network.
- POS: Moderate premiums. Requires a PCP and referrals. Covers out-of-network care at higher cost. Best for people who want a coordinated care structure but need the safety valve of out-of-network access.
- PPO: Highest premiums. No PCP required, no referrals needed. Covers out-of-network care more generously than a POS plan. Best for people who want maximum freedom to choose providers.
On cost, the 2025 KFF Employer Health Benefits Survey puts the average annual premium for employer-sponsored coverage at $9,325 for an individual and $26,993 for a family. PPO premiums run above that average, at $9,818 for singles and $28,272 for families. POS premiums generally fall between HMO and PPO pricing, though exact numbers vary widely by insurer and region. High-deductible plans with a savings option come in lowest, averaging $8,620 for individual coverage.
The Referral Requirement
The referral process is the detail that catches most POS enrollees off guard. You can’t just book an appointment with a specialist whenever you want. Your primary care doctor evaluates whether specialist care is necessary and then submits a formal referral. Without it, your plan may deny coverage for the visit entirely, even if the specialist is in-network.
Some POS plans also require prior authorization for certain procedures or treatments, which is a separate step from the referral. Prior authorization means your insurer reviews and approves the service before it’s performed. Your PCP’s office or the specialist’s office typically handles the paperwork, but it’s smart to confirm that authorization has been granted before your appointment date. Delays in authorization are one of the most common reasons for unexpected bills.
For people who rarely see specialists, the referral step is a minor inconvenience. For those managing chronic conditions that require regular visits to multiple specialists, it adds a layer of coordination that can become frustrating. If you already know you’ll need frequent specialist care, weigh whether the savings of a POS plan justify the extra administrative steps compared to a PPO.
Who Benefits Most From a POS Plan
POS plans tend to work well for people in a specific middle ground. You want lower premiums than a PPO offers, you’re comfortable having a primary care doctor manage your care, but you don’t want to be locked into a network with zero outside options. Maybe you live near a state border and occasionally see a provider across the line. Maybe you have a longtime specialist who isn’t in your plan’s network and you’d like to keep seeing them, even at a higher cost.
They’re less ideal if you already know you’ll use out-of-network care frequently. In that case, a PPO’s lower out-of-network cost-sharing and lack of referral requirements will likely save you money over time, even with the higher premium. And if you’re confident you’ll stay in-network for everything, an HMO will give you the lowest premiums without the complexity of a POS plan’s dual cost structure.
When evaluating a POS plan during open enrollment, look beyond the monthly premium. Check the plan’s provider directory to see if your current doctors are in-network. Compare the in-network and out-of-network deductibles side by side. And pay attention to the out-of-pocket maximums for both tiers, because those numbers tell you your worst-case financial exposure for the year.