The short answer
The Indian Health Service is a federal agency that provides health care to eligible American Indians and Alaska Natives through IHS facilities, tribally run programs, and urban Indian health programs. Care outside those facilities may be covered through Purchased/Referred Care, which has requirements and is not an entitlement. IHS states plainly that it is not a health insurance provider.
IHS is part of the Department of Health and Human Services and describes itself as the principal federal health care provider and advocate for Indian people.
Services are delivered three ways: directly by IHS, by tribes under self-determination agreements, and through urban Indian health programs.
Eligibility depends on tribal membership and IHS policy, so ask your tribe and your facility.
IHS is not health insurance, and it provides care to eligible people at its own hospitals and clinics.
On this page
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This page is for American Indian and Alaska Native patients and families. It explains how the Indian Health Service works, who is eligible, how outside cancer care gets paid for, and what the agency cannot do.
What the Indian Health Service is
The Indian Health Service, usually shortened to IHS, is a federal agency inside the U.S. Department of Health and Human Services. IHS describes itself as the principal federal health care provider and health advocate for Indian people.
How the system is built
IHS is not one hospital. It is a delivery system with three parts:
- Direct IHS services. These are provided at federal hospitals and clinics run by the agency.
- Tribal programs. These are run by federally recognized tribes under self-determination agreements.
- Urban Indian health programs. These serve American Indians and Alaska Natives living in cities, through the Office of Urban Indian Health Programs.
Tribes may run their own programs. So the answer to "what is available near me" genuinely varies from one community to the next. It depends on the agreements a particular tribe has.
Who is eligible
Eligibility for IHS services follows IHS policy and depends on tribal membership and related rules. IHS also makes an important point plainly: it is not a health insurance provider. It can provide health care only to eligible American Indians and Alaska Natives. That care is at its federal hospitals and clinics.
Ask your tribe and the specific health facility about eligibility, because the answer can depend on both.
Purchased and referred care
Cancer care often needs services a local clinic does not provide. That is where Purchased/Referred Care, or PRC, comes in. IHS defines it as medical or dental care provided away from an IHS or tribal facility. This is in contrast to direct care given inside one.
PRC works as a referral and payment system. When care is needed elsewhere, a patient can ask IHS to approve and pay for it. IHS lists conditions that must be met:
- Residency requirements
- Notification requirements
- Medical priority
- Using alternate resources first, such as Medicare, Medicaid, or private insurance
IHS states something you should read twice. PRC is not an entitlement program. An IHS referral does not imply the care will be paid. There is an appeal process if a request is denied.
That single sentence explains most PRC frustration. A referral and an approved payment are two different things.
What IHS can do for a patient today
You can find out where you stand. IHS says that once eligibility is confirmed, you contact the facility's patient registration department. That department explains the registration process. It also explains the documents needed to establish a medical record, and how to schedule appointments.
You can get connected to comprehensive services. IHS describes clinical and preventive care, behavioral health, and environmental health. It also describes health promotion, disease prevention, and community health representative programs.
And if you need care outside the system, you can start the PRC process early rather than after the fact. Notification requirements exist. Meeting them on time protects you.
What it cannot do
It is not insurance. IHS says so directly. Coverage you can carry to any provider is a different thing. Services at IHS and tribal facilities work differently.
It cannot promise to pay for outside care. PRC has requirements, priorities, and limited funding. A referral alone is not approval.
It cannot serve people who are not eligible. Ask your tribe and facility how eligibility applies to you.
It cannot answer facility-specific questions from a national web page. What your clinic offers is a local question. So is whether a service is direct or purchased.
And it cannot make treatment decisions for you. This page describes an agency, not medical advice. Talk with your own clinicians about your care.
Practical steps that help
Register before you are in crisis. Establishing a medical record is much easier on a calm day. So is confirming eligibility.
Ask about PRC as soon as an outside referral is mentioned. Ask specifically what notification is required, by when, and who submits it.
Bring your other coverage information. Alternate resources must be used first. Having your Medicare, Medicaid, or private plan details on hand speeds things up rather than reducing your access.
Ask about the appeal process if something is denied. IHS says one exists, along with a written statement of patient rights and responsibilities.
Finally, ask who coordinates cancer care in your area. Your care may be direct, tribal, or urban. Whichever it is, one person who knows your case is worth more than any amount of paperwork.

Common questions
Is the Indian Health Service health insurance?
No. IHS states that it is not a health insurance provider and that it can provide health care only to eligible American Indians and Alaska Natives at its federal hospitals and clinics.
Who is eligible?
Eligibility is set by IHS policy and depends on tribal membership and related rules. Ask your tribe and your specific IHS facility whether you qualify.
What is Purchased/Referred Care?
IHS defines PRC as medical or dental care provided away from an IHS or tribal facility, with IHS authorization and payment requested for those services.
If I get a referral, is my outside care paid for?
Not automatically. IHS says PRC is not an entitlement program and that a referral does not imply the care will be paid. Requirements include residency, notification, medical priority, and using alternate resources first.
What if PRC is denied?
IHS says the program has an appeal process, along with patient rights and responsibilities documentation. Ask your facility how to start an appeal.
How do I become a patient?
IHS says that once eligibility is confirmed you contact the facility's patient registration department, which explains registration, needed documents, and scheduling.
Does IHS provide cancer treatment itself?
IHS describes comprehensive clinical, preventive, and behavioral health services. Specialized cancer treatment may involve referral outside the facility, which is where PRC applies. Ask locally what is available.
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Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Editorial review complete — This page completed Cancer Explained's editorial checks (sources, safety, plain language, duplication). It has not been reviewed by a physician or other healthcare professional.
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