Which Healthcare Facilities Don't Bill Medicare Directly

Facilities That Don't Submit Medicare Claims

Some healthcare facilities are not set up to bill Medicare at all, even if you have Medicare coverage. These include Veterans Affairs (VA) hospitals and clinics, Indian Health Service facilities, military treatment facilities, and federal prisons. You cannot use your Medicare card at these places because they operate under separate federal funding systems and serve specific populations. If you receive care at one of these facilities, you pay through that system alone — Medicare is not involved.

Beyond federal facilities, some private providers choose not to participate in Medicare. A small number of doctors, dentists, and therapists operate on a cash-only basis and do not submit claims to any insurance, including Medicare. These providers must inform you upfront that they do not accept Medicare, and you would pay them directly out of pocket.

Key Takeaways

VA hospitals, Indian Health Service clinics, military treatment facilities, and federal prisons do not bill Medicare because they are funded separately and serve defined populations.
Some private providers opt out of Medicare entirely and operate on cash-only terms; they must tell you this before you receive care.
If a provider is exempt from Medicare claims, your Medicare card will not work there, and you cannot file a claim yourself.
Knowing which facilities are exempt helps you plan ahead and understand where your Medicare coverage does and does not extend.

VA and Military Healthcare Systems

The Department of Veterans Affairs runs its own hospitals and outpatient clinics nationwide. These facilities serve veterans who meet VA may be able to access requirements based on military service, discharge status, and sometimes income. VA facilities do not bill Medicare because they are funded through a separate congressional appropriation, not through Medicare premiums or payroll taxes.

Similarly, military treatment facilities — hospitals and clinics run by the Department of Defense — serve active-duty service members, retirees, and their families. These facilities bill TRICARE (the military health insurance program) or other military insurance, not Medicare. If you are a Medicare beneficiary who is also may be able to access for military healthcare, you would use one system or the other depending on where you seek care, but not both at the same facility.

Indian Health Service Facilities

The Indian Health Service (IHS) operates hospitals, clinics, and health centers that serve American Indian and Alaska Native populations. These facilities are funded by the federal government to provide healthcare to tribal members and other Native peoples. IHS facilities do not submit Medicare claims, even if a patient has Medicare coverage.

Some IHS facilities have agreements to bill Medicare as a secondary payer after IHS funding is exhausted, but the primary billing goes through IHS, not Medicare. If you receive care at an IHS facility, ask the billing office whether Medicare will be billed as a secondary source; the answer varies by location and the type of care you receive.

Federal Prison Healthcare

Healthcare provided inside federal prisons is funded and delivered by the Bureau of Prisons, not through Medicare. Inmates do not use Medicare coverage while incarcerated, regardless of whether they are Medicare beneficiaries. The federal government covers all medical care for incarcerated individuals as part of the cost of incarceration.

This exemption applies only to care received while in federal custody. Once a person is released, Medicare coverage resumes normally if they remain may be able to access.

Private Providers Who Opt Out of Medicare

Some doctors, dentists, mental health counselors, and other providers choose not to participate in Medicare at all. These providers do not have a Medicare provider number and do not submit claims to Medicare. They operate on a cash-only or private-pay basis.

A provider who opts out of Medicare must give you written notice before you receive care. The notice must state that they do not accept Medicare and that you will be responsible for the full cost. You cannot file a Medicare claim yourself for care from an opted-out provider — Medicare will not reimburse you. However, you may be able to use a supplemental insurance plan or Medicare Advantage plan to cover some of the cost, depending on your plan's rules.

State and Local Government Facilities

Some state and local government hospitals — particularly public hospitals in large cities — are exempt from certain Medicare billing requirements under federal law. However, most of these facilities do accept Medicare and will bill it. The exemption is technical and relates to how they handle billing disputes and appeals, not whether they can bill Medicare at all.

If you are receiving care at a public hospital, ask the billing department directly whether they accept Medicare. In nearly all cases, they do, and your Medicare card will work as it does at any other hospital.

What Happens When You Use an Exempt Facility

If you receive care at a facility exempt from Medicare claims, you cannot use your Medicare coverage there. You will either pay out of pocket, use an alternative insurance you may have (such as TRICARE or VA benefits), or use the facility's own payment system. Medicare will not process a claim for care received at an exempt facility, even if you submit one yourself.

Before you schedule care at any facility, confirm whether it accepts Medicare. If it does not, ask about payment options, financial information programs, or whether you can be referred to a nearby facility that does accept Medicare.

Frequently Asked Questions

Can I use my Medicare card at a VA hospital?

No. VA hospitals do not bill Medicare. If you are a veteran, you use your VA may be able to access to receive care there. If you are not a veteran or do not meet VA may be able to access requirements, you cannot receive care at a VA facility. Your Medicare coverage does not extend to VA hospitals.

What if I have both Medicare and TRICARE?

You can use either one, but not at the same facility. If you go to a military treatment facility, TRICARE is your primary insurance. If you go to a civilian hospital or doctor's office, Medicare is primary. You choose which system to use based on where you seek care.

Do I have to pay the full cost if I see an opted-out provider?

Yes, unless you have a supplemental insurance plan that covers out-of-network care. Some Medigap plans and Medicare Advantage plans will reimburse you for care from opted-out providers, but you must check your plan documents. Medicare itself will not pay anything.

Can an IHS facility bill Medicare as a secondary payer?

Some IHS facilities have agreements to bill Medicare after IHS funds are used, but this varies by location and service type. Call the IHS facility's billing office before your appointment to ask whether they will bill Medicare as secondary coverage.

What if I did not know a facility was exempt and I received a bill?

Contact the facility's billing office and explain that you were not informed upfront that they do not accept Medicare. Ask about payment plans, financial information, or whether the bill can be adjusted. If a private provider failed to give you written notice before care, ask whether they will reconsider billing Medicare or reducing the charge.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.