In-Network vs. Out-of-Network Dentist: Costs Explained

Whether you are choosing a dentist for the first time or thinking about switching providers, understanding the difference between in-network and out-of-network care is one of the most practical steps toward avoiding unexpected dental bills. The distinction matters because it can shift hundreds of dollars of cost from your insurer to your wallet -- even when both dentists are licensed, qualified, and performing the same procedure.

This guide explains how dental insurance networks function, what PPO and HMO plans mean for your choice of provider, and how to find an in-network dentist before your first appointment.

What Does In-Network Mean for Dental Insurance?

When a dentist participates in a dental insurance network, it means they have signed a contract agreeing to charge plan members a pre-negotiated fee -- called the contracted rate or allowed amount -- for covered services. According to Delta Dental, this contracted rate is typically lower than the dentist's full standard fee. In exchange, the dentist gains access to the insurer's enrolled members.

From a patient perspective, seeing an in-network provider means:

• Your plan pays based on the lower negotiated rate, reducing the base amount from which co-pays and deductibles are calculated
• You generally pay a lower co-pay percentage for the same procedure
• The dentist is prohibited by contract from charging you more than the contracted rate for covered services (no balance billing)

The National Association of Dental Plans (NADP) describes in-network participation as one of the most significant factors affecting a patient's out-of-pocket dental cost. The same cleaning, filling, or crown can cost materially less -- in total -- when performed by an in-network provider.

How Do In-Network vs. Out-of-Network Costs Compare?

The financial difference between in-network and out-of-network dentistry involves two separate factors that compound each other.

Factor 1: The plan pays a lower percentage for out-of-network services.

Most PPO plans pay a higher percentage of the allowed amount for in-network services than for out-of-network services. For example, a plan might cover 80 percent of the fee for a basic procedure in-network but only 60 percent out-of-network.

Factor 2: The "allowed amount" baseline is lower for out-of-network providers.

When you see an out-of-network dentist, your plan does not use the contracted rate. Instead, it uses a benchmark called the "usual, customary, and reasonable" (UCR) fee, which is the amount the plan considers typical for that procedure in your geographic area. Humana's dental resource materials note that this UCR figure may be lower than the out-of-network dentist's actual fee -- meaning you are responsible for both the co-pay percentage and the gap between the UCR and the dentist's full charge. This gap is called balance billing.

Illustrative example only. Actual fees, UCR figures, and plan percentages vary by plan, provider, and region. Always verify with your insurer.

Illustration: stylized comparison of estimated patient cost share for the same dental procedure in-network vs. out-of-network under a typical PPO plan. Actual amounts depend on your specific plan, procedure, and provider fee.

Dental PPO vs. HMO: Key Differences

The two most common types of individual and employer dental plans have meaningfully different rules about provider choice.

Dental PPO (Preferred Provider Organization)

According to the National Association of Dental Plans, a dental PPO is the most prevalent plan type in employer-sponsored and individual dental markets. PPOs offer the greatest flexibility:

• You can see any licensed dentist; you are not restricted to a specific provider or required to get referrals
• In-network providers have negotiated fees that reduce your cost
• Out-of-network providers are covered but at a lower rate
• No primary dentist designation is required

PPOs are generally more expensive in premiums than DHMO plans but offer greater choice.

Dental HMO (DHMO or Capitation Plan)

A dental HMO requires you to select a primary care dentist from within the plan's network. According to the National Association of Dental Plans:

• You must receive care from your designated in-network provider (or receive referrals from them for specialist care)
• Out-of-network care is typically not covered at all, except in a genuine emergency
• Premiums are generally lower than PPO plans
• Co-pay amounts are fixed rather than percentage-based in many DHMO structures

DHMO plans work well for patients who live near a plan-participating dentist and have predictable dental needs. They are less flexible when you want to choose among multiple providers or see a specialist of your own choosing.

What Is Balance Billing in Dentistry?

Balance billing occurs when an out-of-network provider charges more than your plan's allowed amount and bills you for the difference. Under a PPO plan, your insurer pays a percentage of the UCR amount -- not the provider's full fee. If the provider charges more than the UCR, the remaining amount is billed directly to you.

This is distinct from in-network care, where the dentist has contractually agreed not to charge you more than the contracted rate for covered services, according to Delta Dental plan documents.

Understanding balance billing is one reason why confirming a provider's network status before scheduling is worth the few minutes it takes.

Can You Use an Out-of-Network Dentist with a PPO Plan?

Yes, in most cases. Dental PPO plans allow out-of-network visits, though the patient pays more. The decision to use an out-of-network dentist may make sense when:

• You have an established, trusted relationship with a dentist who recently left your network
• A specialist with specific expertise in a rare or complex condition is not available in network
• You are traveling or live in an area where in-network providers are limited

Before deciding to see an out-of-network provider, it is worth calling your insurance company to request an estimate of what they will pay for the specific procedure under your out-of-network benefit. Some plans will provide a written pre-treatment estimate for out-of-network cases.

How to Find an In-Network Dentist

The most reliable approach is to use your insurer's official provider directory. Most major dental plans publish searchable online directories:

• Delta Dental: directory.deltadental.com (searchable by ZIP code and plan type)
• Cigna: mycigna.com provider search
• Humana: humana.com/find-care
• United Healthcare Dental: provider.uhc.com

These directories are generally updated regularly, but network participation can change. The National Association of Dental Plans recommends calling the dental office directly to confirm they are currently accepting your specific plan before your first appointment, since online directories can occasionally be out of date.

If your employer sponsors your dental plan, your human resources or benefits department can often confirm which network applies to your coverage.

For additional guidance on choosing a dentist beyond network status, see our guide on how to choose a dentist.

When Choosing an Out-of-Network Dentist May Be Worth It

There are situations where a patient may decide the additional cost of an out-of-network dentist is justified:

• A specific specialist has a rare skill set or outcomes record relevant to a complex procedure
• You have a long-established relationship with a dentist who recently left the network and value continuity of care
• Your plan's in-network options are very limited in your geographic area
• The procedure in question has a small enough fee that the additional out-of-pocket difference is manageable

If you are considering this tradeoff, the clearest approach is to ask the out-of-network dentist for an itemized fee estimate, then call your insurer to ask what they would pay under your out-of-network benefit for each procedure code. The gap between those two numbers is your estimated additional out-of-pocket cost.

Questions to Ask Before Your First Appointment

A few practical questions can prevent billing surprises:

• Are you currently in-network for [my plan name and network tier]?
• Do you bill insurance directly, or will I need to submit a claim myself?
• Can you provide a pre-treatment cost estimate for the specific procedures discussed?
• If you are out-of-network, what is the full fee for this procedure, and how does balance billing work at your practice?

For patients managing costs without full coverage, our guides on dental financing options and cost of dental care without insurance cover additional strategies.

Illustration: simplified plan-type decision guide. Actual coverage rules depend on your specific plan documents.