Can a Native American elder in Navajo County AZ use both IHS and Medicare at the same time?

Yes. IHS and Medicare are not either/or. They are designed to work together through a coordination-of-benefits arrangement. IHS provides care as the primary payer for services within its facilities. Medicare becomes the payer when IHS refers you to outside (non-IHS) providers through the Purchased/Referred Care (PRC) program, or when you choose to see a Medicare-participating provider directly. Having Medicare actually brings more federal dollars into IHS facilities because IHS can bill Medicare for services rendered to Medicare-enrolled Native patients — dollars that stay in the local IHS service unit.

What does the Whiteriver PHS Indian Hospital cover in Navajo County AZ and when does Medicare kick in?

Whiteriver PHS Indian Hospital (928-338-4911) is an IHS acute care facility serving the White Mountain Apache Tribe. It handles primary care, emergency stabilization, prenatal care, and some specialty services. It does not have a CMS overall star rating because IHS facilities are exempt from standard CMS hospital reporting requirements. When Whiteriver cannot provide a needed service — advanced cardiac care, dialysis, orthopedic surgery, cancer treatment — it refers patients through the PRC program. If the patient has Medicare, Medicare becomes the primary payer for those referred services, and IHS PRC funds serve as payer of last resort. This coordination means Medicare enrollment directly expands what our elders can access.

If I'm a Native caregiver spouse in Navajo County, does my spouse's Medicare coverage help me too?

Medicare coverage is individual — your spouse's Medicare card covers your spouse, and your own Medicare card covers you. However, as a caregiver, understanding how BOTH cards work is essential. If your spouse has Medicare Part A (hospital) and Part B (medical), those cover the outside referrals IHS PRC sends them to — including Summit Healthcare Regional Medical Center in Show Low or Little Colorado Medical Center in Winslow. You, as the caregiver spouse, should also be enrolled in Medicare if you're 65 or older, so that you have coverage for your own care, including the 19.1% mobility disability rate and 4.2% stroke rate that CDC PLACES 2023 data shows for Navajo County adults.

Does the Hopi Health Care Center in Polacca accept Medicare?

Hopi Health Care Center (Highway 264, Milepost 388, Polacca, AZ — phone 928-737-6000) is a Critical Access Hospital operated under IHS authority for the Hopi Tribe. Like all IHS facilities, it can bill Medicare for services provided to Medicare-enrolled patients. This means if a Hopi elder is enrolled in Medicare, Hopi Health Care Center receives Medicare reimbursement for that visit — which increases the facility's operational budget. The facility has no CMS overall star rating (Not Available) because IHS and tribally-operated facilities use a separate oversight framework. Emergency services are not listed as available at this location per CMS hospital data, so for emergencies, Little Colorado Medical Center in Winslow (928-289-4691) is the nearest Critical Access Hospital with emergency services.

What is the PRC priority system and how does it affect Navajo County caregiver spouses?

The Purchased/Referred Care (PRC) program — formerly called Contract Health Services — funds outside medical care when IHS facilities cannot provide it. PRC funds are always limited and are distributed by priority: Priority 1 is immediately life-threatening conditions; Priority 2 is likely to become life-threatening; Priority 3 is likely to cause serious impairment. Most elective or chronic disease management falls into Priority 3 or lower — and is often not funded when PRC budgets run out, which they typically do before the fiscal year ends. If the patient has Medicare, Medicare pays first for referred services, which effectively stretches PRC dollars for patients who don't have Medicare. This is why Medicare enrollment is not just beneficial for the individual elder — it is a community resource that protects everyone's access to PRC.

Joe Redhawk — Indian Country Bureau Chief, Albuquerque, New Mexico
Published April 13, 2026 · Indian Country Desk · Navajo County, Arizona

Yes, Native Seniors in Navajo County AZ Can Use Both IHS and Medicare at the Same Time When Caring for a Spouse — Here's Exactly How the Two Systems Work Together in 2026

TL;DR — The Direct Answer

Yes, you can use both. IHS and Medicare are not competitors — they are designed to coordinate. IHS is your primary care home. Medicare pays for what IHS cannot provide, including outside referrals your spouse needs through the Purchased/Referred Care (PRC) program.
19.1% of Navajo County adults have a mobility disability (CDC PLACES 2023) — meaning caregiving spouses here are managing some of the most physically demanding care in the country, often without home health backup. Medicare Part A covers some home health; IHS does not. That gap matters.
Navajo County has exactly 5 hospitals — 2 IHS/tribal facilities, 2 Critical Access Hospitals, and 1 psychiatric facility. Only 2 have emergency services. Knowing which card to use at which door can be the difference between a covered claim and a bill your family cannot pay.

Let me tell you what I hear at Chapter House meetings and senior center lunches from Show Low to Winslow to Polacca: "I don't want to mess with Medicare. I have my IHS card. That's enough." I understand that instinct. IHS is familiar. It's ours, in a complicated way. The paperwork for Medicare feels like it belongs to a different world.

But here's the hard truth I spent 18 years learning as an IHS administrator: IHS has never been fully funded. It was funded at roughly 55 cents on the dollar compared to what the federal government acknowledges is needed. That gap is not a policy choice. It is a broken promise. And the way our elders can partially bridge that gap — today, right now, in 2026 — is by enrolling in Medicare and letting the two systems work together the way they were designed to.

This is especially true when you're caring for a spouse. Because when one of you needs something IHS can't provide — a hip replacement, dialysis, cardiac catheterization, a skilled nursing stay after surgery — Medicare is what pays for it. Without Medicare enrollment, you or your spouse faces either a PRC waitlist that may run out of money before your case is processed, or a bill from Summit Healthcare in Show Low that nobody planned for.

The Foundation — This Is Not a Benefit. This Is a Treaty Obligation.

IHS exists because the United States government made a promise. In exchange for approximately 500 million acres of land — land that now includes the state of Arizona — the federal government committed to providing healthcare to Native peoples in perpetuity. That promise was made in treaties, affirmed in the Snyder Act of 1921, and codified in the Indian Health Care Improvement Act. When IHS is underfunded — and it is always underfunded — that is not a budget shortfall. That is a broken promise. Medicare is a separate federal program you've earned through your work history and payroll taxes. It does not reduce what you're owed from IHS. Using Medicare alongside IHS is not "double-dipping." It is using every resource your family has earned and is owed.

What does the health picture actually look like for elders in Navajo County right now?

Before we get into the mechanics, let's talk about what our elders here are actually managing. Because the answer to "which system should I use" depends entirely on what conditions are in the room.

According to CDC PLACES 2023 data for Navajo County (population 109,175), these are the numbers that matter most for caregiving households:

A few things jump out of that data for anyone thinking about a caregiving household:

Mobility disability at 19.1% — nearly 1 in 5 adults. That is not a statistic about frailty. That is a statistic about what it physically costs to live at elevation, on unpaved roads, hauling water, living in homes that were never designed to be accessible. When your spouse has a mobility disability, you become their transportation system, their medication manager, and their physical therapist. Medicare Part B covers outpatient physical therapy. IHS typically does not have the physical therapy staffing to serve that demand. Know that Medicare is there.

Stroke rate at 4.2% (CDC PLACES 2023) — higher than the national average of approximately 3.3%. Post-stroke rehabilitation — speech therapy, occupational therapy, inpatient rehab — is almost entirely a Medicare coverage story. IHS facilities in Navajo County are not equipped to provide intensive inpatient stroke rehab. If your spouse survives a stroke at Whiteriver or Little Colorado, the rehabilitation that determines their quality of life will happen at a Medicare-participating facility. That coverage only exists if they're enrolled.

Arthritis at 25.4% — one of the highest functional burdens in this data set. Arthritis means joint replacements, pain management, rheumatology consultations. None of those routinely happen inside IHS facilities in Navajo County. They require PRC referrals — and if your spouse has Medicare, Medicare pays for those referrals, not the always-exhausted PRC budget.

Blood pressure medication compliance at 75.6% is actually a bright spot. Three out of four people with high blood pressure here are taking their medication. That's the IHS pharmacy system working. Let's not break that by creating confusion about which system to use for what.

What are the five hospitals in Navajo County and which card do you use at each one?

Navajo County has five hospital facilities according to CMS Hospital Compare data. Here they are — all five — with exactly what you need to know about which card gets used where:

Whiteriver PHS Indian Hospital

IHS Acute Care

200 West Hospital Drive (PO Box 860), Whiteriver, AZ 85941

CMS Overall Rating: Not Available (IHS facilities are exempt from standard CMS rating requirements)

Emergency Services: Not designated (stabilize and transfer protocol)

📞 (928) 338-4911

Which card: Use your IHS/tribal membership card. If enrolled in Medicare, IHS can bill Medicare on your behalf — you typically pay nothing. Serves primarily White Mountain Apache Tribe members and eligible Native patients in the service area.

Hopi Health Care Center

IHS Critical Access

Highway 264, Milepost 388, Polacca, AZ 86042

CMS Overall Rating: Not Available

Emergency Services: Not designated — for emergencies, proceed to Little Colorado Medical Center in Winslow

📞 (928) 737-6000

Which card: IHS/tribal membership card for Hopi tribal members and eligible patients. Medicare can be billed by the facility for enrolled patients. Critical Access Hospital designation means specific Medicare cost-based reimbursement rules apply — this is important for billing questions.

Summit Healthcare Regional Medical Center

Acute Care — Medicare Participating

2200 East Show Low Lake Road, Show Low, AZ 85901

CMS Overall Rating: 4 Stars ⭐⭐⭐⭐

Emergency Services: Yes

📞 (928) 537-4375

Which card: Medicare card (Part A for inpatient, Part B for outpatient). This is the highest-rated hospital in the county at 4 stars — this is where PRC referrals for surgery, cardiac care, and complex cases typically go. If you arrive without a PRC authorization, Medicare is your protection. Without Medicare, you face full charges.

Little Colorado Medical Center

Critical Access Hospital — Medicare Participating

1501 North Williamson Avenue, Winslow, AZ 86047

CMS Overall Rating: Not Available

Emergency Services: Yes

📞 (928) 289-4691

Which card: Medicare card. As a Critical Access Hospital, Little Colorado receives cost-based Medicare reimbursement — meaning Medicare pays a higher rate here than at a standard hospital. This matters for the hospital's financial survival and for your coverage. This is the nearest emergency-service hospital to the Hopi mesas.

Changepoint Psychiatric Hospital

Psychiatric Facility

1920 West Commerce Drive, Lakeside, AZ 85929

CMS Overall Rating: Not Available

Emergency Services: No

📞 (928) 368-4110

Which card: Medicare Part A covers inpatient psychiatric care (up to 190 lifetime days). Important note for caregiving households: caregiver burnout, depression, and anxiety are real and common. If either you or your spouse needs mental health inpatient care, Medicare is the payer. IHS behavioral health services are outpatient only at most service units.

⚠ Important — No Emergency Room at Hopi Health Care Center

Per CMS hospital data, Hopi Health Care Center in Polacca does not have designated emergency services. If a Hopi elder or their spouse has a stroke, cardiac event, or serious injury, the nearest hospital with emergency services is Little Colorado Medical Center in Winslow (928-289-4691) — approximately 70 miles west on Highway 87. Knowing this before an emergency happens is part of your caregiving plan. Write that number down. Program it into every phone in your household.

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How does the IHS + Medicare coordination actually work when my spouse needs outside care?

Here's the mechanics. I'll make it plain.

When your spouse goes to Whiteriver PHS Indian Hospital or Hopi Health Care Center for a visit, IHS is the primary provider. If your spouse is enrolled in Medicare, IHS will bill Medicare for that visit. Your spouse pays nothing. The money goes back into the IHS service unit's budget — which means more funding for everyone at that facility. This is called "third-party billing" and it is one of the few ways IHS can increase its operating resources without waiting for Congress to appropriate more money.

When IHS cannot provide a service — and this happens constantly because IHS facilities are not full-service hospitals — your spouse gets referred through the Purchased/Referred Care (PRC) program. PRC is the mechanism for paying outside providers for services the IHS facility cannot deliver.

Here is where Medicare enrollment becomes critical for a caregiving household:

Situation	Without Medicare	With Medicare
Spouse needs hip replacement surgery at Summit Healthcare, Show Low	PRC must fund the entire cost. If PRC budget is exhausted (often by spring), care is deferred or denied.	Medicare Part A pays for inpatient surgery. PRC only covers what Medicare doesn't. PRC dollars stretch further.
Spouse needs dialysis three times a week after kidney disease progresses	PRC must fund dialysis — one of the most expensive ongoing referrals in the system. Nearly impossible to sustain.	Medicare pays for dialysis as an ESRD benefit. PRC is not needed. This is a life-or-death enrollment issue.
Spouse has a stroke and needs 3 weeks of inpatient rehabilitation	PRC funds must cover inpatient rehab — tens of thousands of dollars. Likely denied at Priority 3.	Medicare Part A covers inpatient rehab facility stay (up to 100 days after qualifying hospital stay). PRC zero dollars needed.
Caregiver spouse needs outpatient physical therapy for mobility disability	IHS outpatient PT if available. Waitlists common. No outside PT covered without PRC authorization.	Medicare Part B covers outpatient PT at any Medicare-participating provider. No PRC needed.
Spouse needs prescription cholesterol medication not on IHS formulary	No coverage for non-formulary drugs. Out-of-pocket cost or go without.	Medicare Part D (prescription drug plan) may cover the medication. Enrollment in a Part D plan required separately.

That table is why I spent 18 years telling every Native elder I could find: enroll in Medicare. Not because IHS isn't enough. It's not enough — but that's the government's failure, not yours. Medicare enrollment is how you protect your household from the consequences of that failure.

What about the cholesterol screening data — and why does that matter for caregiver spouses specifically?

CDC PLACES 2023 data shows 81% of Navajo County adults have had cholesterol screening (source: CDC PLACES 2023, cdc.gov/places). That's actually reasonably good — it means IHS preventive care is reaching most people. But here's the problem: of those screened, 29.7% have high cholesterol.

29.7%

of Navajo County adults who have been screened have high cholesterol — more than 1 in 4 adults in the county

Source: CDC PLACES 2023, Navajo County AZ (95% CI: 26.8%–32.6%) · cdc.gov/places

High cholesterol, combined with that 4.2% stroke rate, paints a cardiovascular disease burden