Choosing Health Insurance in the United States involves more than comparing monthly premiums and deductibles. You also need to understand which doctors, hospitals, specialists, and other healthcare providers your plan covers. Visiting a provider outside your insurance network can sometimes leave you responsible for significantly higher medical bills. Health insurance companies use provider networks to organize healthcare services and manage costs. These networks influence where you can receive treatment, how much you pay for appointments, and whether your insurance will cover certain services. Understanding how networks work can help you choose a suitable health plan and avoid unexpected expenses.
In this guide, you will learn what a health insurance network is, how in-network and out-of-network providers differ, how provider networks affect your costs, and what you can do to check your coverage before receiving medical care.
What Is a Health Insurance Network?
A health insurance network is a group of doctors, hospitals, clinics, laboratories, pharmacies, and other healthcare providers that have agreements with an insurance company or health plan. These providers agree to certain contractual terms, which may include negotiated payment rates for covered services. When you receive covered care from a provider in your plan’s network, you generally benefit from the network’s negotiated rates and the plan’s in-network cost-sharing rules. Depending on your policy, you may still need to pay a deductible, copayment, or coinsurance. Being in-network does not automatically mean that healthcare is free.
For example, suppose your insurance plan includes a particular hospital and primary care doctor in its network. Visiting those providers may cost you less than receiving the same type of care from providers who have no contract with your plan. However, provider networks are not necessarily the same across all plans offered by an insurance company. Two policies from the same insurer may have different networks, so you should check the exact plan you are considering rather than assuming that a doctor who accepts one policy also accepts another.
What Does In-Network Mean?
An in-network provider is a healthcare professional or facility that has a contract with your specific health plan. These contracts generally establish the rates and terms under which the provider delivers covered services to plan members. In-network providers can include primary care physicians, specialists, hospitals, urgent care centers, laboratories, imaging facilities, and other healthcare professionals. The exact providers available depend on your plan’s network.
How In-Network Care Works
When you visit an in-network provider, your insurance plan generally applies its in-network benefits. Depending on the service and your policy, you may pay a copayment, meet a deductible, or share the covered cost through coinsurance. Your insurer then pays its portion according to the terms of your plan. For example, imagine your plan has a $30 copayment for an eligible in-network primary care visit. If the visit qualifies for that benefit, you would generally pay $30 rather than the provider’s full negotiated charge. Other services received during the appointment may have different cost-sharing rules.
Benefits of Using In-Network Providers
Using in-network providers can make healthcare more affordable and easier to manage. Your plan may cover a greater share of eligible expenses, and the negotiated rates can reduce the amount used to calculate your costs. In-network care can also make it easier to estimate expenses before scheduling an appointment. However, you should still confirm that the specific service is covered, check whether prior authorization or a referral is required, and understand how your deductible and out-of-pocket maximum apply.
What Does Out-of-Network Mean?
An out-of-network provider is a doctor, hospital, or other healthcare professional or facility that does not have a participating contract with your specific health plan for the service you receive. These providers have not agreed to the same contractual payment terms as providers in your network. Depending on your policy, your insurance may cover some out-of-network services, or it may provide no routine coverage for them. Even when coverage is available, you may face a higher deductible, greater coinsurance, or additional charges.
How Out-of-Network Care Works
Suppose your insurance plan covers certain specialist appointments at a lower cost when you use an in-network doctor. You decide to visit a specialist who does not participate in your plan’s network. If your plan provides out-of-network benefits, it may pay only a portion of the eligible amount under its rules. You may then owe more than you would have paid for an in-network appointment. In some situations, the provider may also bill you for the difference between its charge and the amount recognized or paid by the insurer. This is commonly called balance billing. Whether balance billing is permitted depends on the circumstances, applicable law, and the terms of your coverage.
When Out-of-Network Care May Be Necessary
You may need out-of-network care if a particular specialist is unavailable within your network, you are traveling, or you need treatment from a provider who does not participate in your plan. Sometimes, a provider may leave your network while you are receiving ongoing treatment. Before scheduling planned out-of-network care, ask your insurer whether the service is covered, how much you may have to pay, and whether an in-network alternative is available. If your plan does not cover the service, you could be responsible for a substantial portion or all of the bill.
In-Network vs. Out-of-Network: Key Differences
The main difference between in-network and out-of-network care is the provider’s contractual relationship with your specific health plan. That relationship can affect coverage, negotiated rates, your cost-sharing responsibilities, and whether additional billing is permitted.
| Feature | In-Network Care | Out-of-Network Care |
|---|---|---|
| Provider relationship | The provider has a contract with your specific plan. | The provider does not have a participating contract with your plan for the service. |
| Insurance coverage | Generally covered according to the plan’s in-network benefits, subject to policy terms. | Coverage varies by plan; some plans provide little or no routine out-of-network coverage. |
| Out-of-pocket costs | Generally lower for covered services. | May be considerably higher. |
| Negotiated rates | Contractual rates generally apply to covered services. | The provider may charge different rates, subject to applicable law and any relevant agreements. |
| Deductible and coinsurance | In-network rules generally apply. | Separate out-of-network rules may apply, if the plan provides coverage. |
| Balance billing | Generally restricted by the provider’s contract for covered services. | May be permitted in some circumstances, but federal or state protections may prohibit it in others. |
| Referral requirements | Depends on the type of plan and service. | Depends on the plan; a referral does not automatically make an out-of-network service covered. |
These differences are general guidelines rather than guarantees. Always check your policy’s benefits, exclusions, referral requirements, and out-of-network provisions before receiving planned care.
How Do Health Insurance Networks Affect Your Costs?
Your provider network can have a significant effect on your total healthcare expenses. The amount you pay depends on your plan’s rules, the type of service, the provider’s charges, and whether the care qualifies for coverage.
1. Deductibles
A deductible is the amount you must pay for certain covered healthcare services before your insurance begins paying its share. Some plans have separate in-network and out-of-network deductibles, and the amounts may differ considerably. For example, your plan might have a $1,500 in-network deductible and a $3,000 out-of-network deductible. If both apply to your situation, you may need to pay more toward your out-of-network deductible before your plan begins contributing to eligible services.
For a more detailed explanation, read our guide to Health Insurance Deductibles.
2. Copayments
A copayment, or copay, is a fixed amount you pay for a covered healthcare service. Your plan may charge one copayment for an in-network primary care appointment and a different amount for specialist care. Out-of-network services may follow different rules or may not be covered at all.
Learn more about these payments in our article on Health Insurance Copayments.
3. Coinsurance
Coinsurance is the percentage of an eligible healthcare expense you pay after meeting the applicable deductible, when one applies. For example, your plan might require you to pay 20% of an eligible in-network service while the insurer pays the remaining 80% of the allowed amount. Out-of-network coinsurance can be higher, and it may be calculated using different plan rules. If the provider’s charge exceeds the amount recognized by your insurer, you could also face additional costs when balance billing is permitted.
Our guide to Health Insurance Coinsurance explains how percentage-based cost sharing works.
4. Out-of-Pocket Maximums
An out-of-pocket maximum is the limit on what you pay for covered services that count toward the applicable maximum during a plan year. Once you reach that limit, your plan generally pays 100% of covered, in-network essential health benefits for the remainder of the plan year, subject to its terms. However, not every expense counts toward this limit. Premiums, noncovered services, and certain out-of-network charges may not count. If your plan has a separate out-of-network maximum, you should check which expenses qualify toward each limit.
Read our guide to Health Insurance out-of-pocket Maximums to understand what these limits mean for your budget.
Do All Health Insurance Plans Have the Same Network Rules?
No. Health insurance plans use different network structures, and the rules for receiving out-of-network care can vary considerably. Understanding your plan type can help you determine how much flexibility you have when choosing doctors and hospitals.
Health Maintenance Organization (HMO)
An HMO generally requires you to receive routine care through its network, except where coverage rules or applicable protections provide otherwise. Many HMO plans also require you to choose a primary care provider and obtain referrals before seeing certain specialists. Routine out-of-network services are generally not covered under an HMO, except in specified circumstances such as emergencies. Check the policy for its exact requirements before receiving care.
Preferred Provider Organization (PPO)
A PPO generally gives you more flexibility to use providers outside its network. You typically pay less when you use participating providers, while out-of-network care may be covered at a higher cost to you. Depending on the service, you may also face balance billing when it is legally permitted. A PPO can be useful for people who want more provider choice, but its premiums and out-of-network costs may be higher than those of some other plans.
Exclusive Provider Organization (EPO)
An EPO generally limits coverage to providers within its network, except for emergency care and other situations covered by applicable rules. Unlike many HMOs, an EPO may not require you to obtain a referral to see a specialist, but the details depend on the plan.
Point of Service (POS)
A POS plan combines features of HMOs and PPOs. It generally offers lower costs when you use in-network providers and may provide some coverage for out-of-network care. These plans commonly require referrals from a primary care provider for specialist treatment, although the exact rules vary.
For a more detailed comparison, read our guide to Types of Health Insurance Plans and our article on HMO vs. PPO Health Insurance.
What Is Balance Billing?
Balance billing occurs when a healthcare provider bills you for the difference between the provider’s charge and the amount paid or recognized by your health plan. It may arise when you receive certain out-of-network services, depending on the circumstances and applicable protections. For example, imagine an out-of-network provider charges $800 for a service, but your insurer pays $400 under the applicable arrangement. If balance billing is legally permitted and no additional agreement or protection applies, the provider might seek to collect some or all of the remaining $400 from you, in addition to any cost-sharing you owe under the plan.
However, this example is illustrative only. Actual responsibility depends on your insurance policy, the service received, the provider’s status, and applicable federal and state law.
What Is the No Surprises Act?
The federal No Surprises Act provides protections against certain unexpected out-of-network medical bills. It generally applies to people with most types of private health insurance and covers specified situations, including emergency services, certain non-emergency services provided by out-of-network professionals at participating facilities, and out-of-network air ambulance services. For covered emergency services, the law generally requires applicable health plans to provide coverage without prior authorization and limits patients’ cost sharing to the applicable in-network level. Certain post-emergency services and non-emergency care at in-network hospitals, hospital outpatient departments, and ambulatory surgical centers may also receive protection, subject to the law’s conditions and exceptions.
These protections do not mean that every out-of-network bill is prohibited. For example, federal surprise-billing protections generally do not cover ground ambulance services in the same way they cover specified air ambulance services, although state laws may provide additional protections. Some non-emergency services may also fall outside the federal protections.
If you receive an unexpected bill that you believe violates the law, review the official CMS medical bill rights guidance or contact the No Surprises Help Desk at 1-800-985-3059 for assistance.
How to Check Whether a Doctor Is In-Network
Checking a provider’s network status before an appointment can help you avoid unexpected expenses. Do not rely solely on a general statement that a doctor accepts your insurance, because accepting an insurance company is not necessarily the same as participating in your specific plan.
1. Check Your Insurance Company’s Provider Directory
Start with the provider directory for your exact health plan. You can usually find it on your insurer’s website or through your member account. Search for the doctor’s name, specialty, location, and the specific facility where you plan to receive care.
Make sure the directory corresponds to your actual policy. Plans offered by the same insurer may use different provider networks, and directories may not always reflect recent changes immediately.
2. Call Your Insurance Company
Call the customer service number on your insurance card and ask whether the specific doctor, facility, and planned service are in-network. Provide the exact plan name and any other identifying information requested by the insurer. If possible, record the date of the call, the representative’s name or identification number, and any reference number provided. You can also ask about your deductible, copayment, coinsurance, prior authorization requirements, and estimated responsibility for the service.
3. Confirm With the Doctor’s Office
Contact the provider’s billing or insurance department and confirm that the office participates in your specific plan. Give them the full plan name rather than simply naming the insurance company. If you are receiving care at a hospital or outpatient center, ask about the facility’s network status as well as the professionals who will provide your treatment.
4. Verify Again Before Major Procedures
For surgery, imaging, laboratory testing, or other expensive services, verify the network status of the facility and the relevant providers before the procedure. A hospital may be in-network while a particular professional involved in your care is not, although federal protections may apply to certain services.
Ask whether the procedure requires prior authorization or a referral and whether any separate services could result in additional costs. Keep copies of estimates, authorization details, and communications with your insurer.
What Should You Do if Your Doctor Leaves Your Network?
A doctor or other healthcare provider may stop participating in your health plan because a contract ends or changes. If this happens while you are receiving ongoing treatment, contact your insurer to ask about your options. Under certain federal rules, qualifying continuing-care patients may be eligible for up to 90 days of temporary in-network cost-sharing when a provider’s network status changes. Eligibility depends on the circumstances, the type of treatment, and the applicable requirements. People who may qualify include certain patients receiving treatment for serious and complex conditions, inpatient or institutional care, scheduled non-elective surgery, pregnancy-related care, or care for a terminal illness. Not every patient qualifies, so ask your insurer whether continuity-of-care protections apply to your situation.
You can also ask your doctor to recommend an in-network replacement and request help locating another provider who can continue your treatment.
What to Do if You Receive an Unexpected Out-of-Network Bill
If you receive a medical bill that seems inconsistent with your coverage, do not assume that you must immediately pay the full amount without checking it. First, compare the bill with your insurer’s Explanation of Benefits (EOB), which explains how the claim was processed and what amount the insurer says you may owe. Contact your insurer and the provider’s billing department to clarify the charges, network status, and any balance-billing issues. Ask whether the service qualifies for federal or state surprise-billing protections and request an itemized bill if the charges are unclear.
If you believe the claim was processed incorrectly, you may be able to appeal the insurer’s decision. Keep copies of the bill, EOB, receipts, referral or authorization documents, and any written communication. If the issue concerns possible violations of the No Surprises Act, you can contact the CMS No Surprises Help Desk or review the official medical bill rights resources.
How to Choose a Health Plan With the Right Provider Network
Before selecting a health insurance plan, make a list of the doctors, specialists, hospitals, and other healthcare providers you regularly use. Check whether each one participates in the network for the plan you are considering, and confirm that the locations you prefer are included. Next, compare the plan’s monthly premiums, deductible, copayments, coinsurance, out-of-pocket maximum, and rules for out-of-network services. A plan with a lower monthly premium may not be the least expensive option overall if it excludes your preferred doctors or offers limited coverage outside its network.
Consider your healthcare needs as well. If you regularly see specialists or want the flexibility to visit providers outside a network, a plan with out-of-network benefits may be worth considering. If you are comfortable using a defined network and want to control costs, a more restrictive plan may be suitable. Review the Summary of Benefits and Coverage and the full plan documents before enrolling.
Frequently Asked Questions About Health Insurance Networks
What is an in-network provider?
An in-network provider is a doctor, hospital, or other healthcare professional or facility that has a participating contract with your specific health plan. Using an in-network provider generally allows you to receive covered services under the plan’s in-network cost-sharing rules.
What happens if I visit an out-of-network doctor?
Your insurance may cover part of the cost, cover nothing for routine care, or apply separate out-of-network deductibles and coinsurance, depending on your plan. You may also face additional charges when balance billing is permitted. Check your policy before scheduling non-emergency care.
Can I use an out-of-network doctor with a PPO plan?
Many PPO plans provide some coverage for out-of-network care, but your costs are generally higher than for in-network services. The amount covered, deductible, coinsurance, and possible additional charges depend on your plan’s terms.
Do HMOs cover out-of-network care?
HMOs generally do not cover routine out-of-network care, although emergency care and certain other situations may be covered under the plan or applicable law. Review your policy to understand the exceptions.
Does in-network mean I do not have to pay anything?
No. You may still need to pay a deductible, copayment, or coinsurance for covered in-network services. Your costs depend on the service, your plan’s benefits, and whether you have met the applicable deductible.
Can a hospital be in-network while the doctor is out-of-network?
Yes. A hospital and the professionals who work there may have different network arrangements. However, federal surprise-billing protections may limit what you can be charged for certain out-of-network services received at an in-network facility.
How can I check if my doctor accepts my insurance?
Use the provider directory for your exact plan, call your insurer using the number on your insurance card, and confirm with the doctor’s billing office. Ask about the specific plan and service rather than relying on a general statement that the office accepts your insurance company.
What is balance billing?
Balance billing is when a provider seeks payment for the difference between its charge and the amount paid or recognized by the insurer. It may be permitted in some out-of-network situations, but federal and state laws restrict it in certain circumstances.
What is the No Surprises Act?
The No Surprises Act is a federal law that protects people from certain unexpected out-of-network medical bills, including specified emergency services, certain non-emergency services at in-network facilities, and out-of-network air ambulance services. Its protections have specific conditions and exceptions.
How Policy Help USA Can Help
Understanding provider networks is an important part of choosing health insurance and managing healthcare expenses. A plan’s network can affect which doctors you can visit, how much you pay for treatment, and whether you need referrals or prior authorization for certain services.
Policy Help USA publishes educational resources to help readers understand health insurance terminology, compare plan features, and make informed decisions about coverage. You can also explore our related guides on types of health insurance plans, HMO vs. PPO health insurance, health insurance deductibles, and out-of-pocket maximums.
Before receiving planned medical care, confirm the provider’s network status directly with your insurer and review your policy’s benefits. Doing so can help you understand your potential costs and reduce the risk of unexpected medical bills.
