TL;DR — The 3 Things You Need to Know Right Now
- IHS and Medicare are not either/or. Native elders in McKinley County can — and should — use both simultaneously. IHS remains a treaty right regardless of your Medicare status.
- McKinley County's health burden is severe. CDC PLACES 2023 data shows 35.7% of county adults report fair or poor health — nearly double the national average of ~18%. This county needs coordinated coverage, not gaps between two systems.
- When IHS bills Medicare for your care, that money stays in the community. Every dollar IHS recoups from Medicare funds more services for all Native patients in McKinley County. Enrolling in Medicare is an act of community support, not individual gain alone.
Can I Really Use Both IHS and Medicare — Or Will One Cancel the Other Out?
This is the question I heard more than any other in my 18 years working inside IHS across three reservations. And every single time, the answer was the same: yes, you can use both. They are designed to work together. What they are not designed to do is make it easy for you — and that's what this article is for.
The Indian Health Service is a treaty obligation. The United States government received approximately 500 million acres of land from Native nations. In exchange, it promised healthcare. That promise does not expire when you turn 65. It does not shrink because you enrolled in Medicare Part B. It does not disappear because a budget committee in Washington decided to underfund IHS for the thirty-seventh consecutive year.
⚖️ This Is Not a Benefit. This Is a Debt.
IHS is not a government "benefit program" like food stamps or housing assistance. It is the fulfillment of a legal contract — treaties signed between sovereign Native nations and the United States federal government. When IHS is underfunded (and it is, chronically, running at roughly 60–70% of need by most independent estimates), that is a breach of contract. Not a budget shortfall. Not a policy choice. A broken promise. Our elders deserve to know the difference.
Medicare, meanwhile, is a federal health insurance program you have earned. If you are 65 or older and worked in covered employment, you paid into Medicare through payroll taxes for your entire working life. If you are under 65 with certain disabilities, you qualified through a separate pathway. Either way — it is yours.
When a Native elder at Gallup Indian Medical Center (516 E. Nizhoni Blvd., Gallup, NM, (505) 722-1000) receives care, and that elder has Medicare, the IHS facility bills Medicare first. Medicare pays what it owes. The IHS facility keeps that reimbursement — not to pocket it, but to reinvest in the facility's capacity to serve everyone, including elders who have no Medicare. Your enrollment in Medicare literally makes more money available for your community. That is not a talking point. That is the IHS third-party billing system in practice. (Source: IHS Office of Finance and Accounting, ihs.gov.)
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When IHS facilities close wards, when Medicare plan networks drop reservation pharmacies, when Contract Health Services funding runs dry — you'll know before Open Enrollment, not after.
What Does "Dual-Eligible" Actually Mean in McKinley County — and Does My Tribe Affect It?
"Dual-eligible" is federal bureaucrat language for a person who qualifies for both Medicare and Medicaid at the same time. In New Mexico, the Medicaid program is called Centennial Care, administered by the New Mexico Human Services Department. When you have Medicare + Centennial Care, you are dual-eligible.
McKinley County is one of the poorest counties in the United States. The county's poverty rate and the demographics of its predominantly Navajo Nation and Zuni Pueblo population mean that a very high share of Medicare-eligible elders also qualify for Centennial Care. The 15.3% uninsured rate among adults aged 18–64 in the county (CDC PLACES 2023, cdc.gov/places) understates the coverage complexity — because many Native adults cycle between IHS, Centennial Care, and sometimes no coverage at all as their income and employment status changes across the year.
Here is what dual-eligibility means practically for McKinley County elders:
- Medicare Part B premium: If you qualify for full Medicaid (Centennial Care), the state pays your Medicare Part B premium — currently $185.00/month in 2026. You pay $0. (Source: CMS.gov, 2026 Medicare Costs.)
- Medicare Part D (drug coverage): Centennial Care covers most prescription drug costs, and as a dual-eligible you qualify for Extra Help (Low Income Subsidy), which can reduce Part D premiums to $0 and eliminate the donut hole gap. (Source: SSA.gov Extra Help program.)
- Cost-sharing: Medicaid covers most Medicare copays and deductibles. The 2026 Part A inpatient deductible is $1,676/stay. If you are dual-eligible, Medicaid can cover that. You may owe very little out of pocket even for hospital stays.
⚠️ Tribe matters — but not in the way people fear. Your tribal membership determines your IHS eligibility. It does not determine your Medicare or Medicaid eligibility. A Navajo Nation member and a Zuni Pueblo member and a Laguna Pueblo member who all live in McKinley County and meet the age/income requirements are all eligible for Medicare and Centennial Care. IHS does not require tribal enrollment to receive care (though it prioritizes American Indian/Alaska Native individuals). But the specific IHS service area — Navajo Area IHS vs. Zuni Service Unit — does affect which facility is your primary IHS site. That is a different question from whether you qualify.
Why Does Coordinated IHS + Medicare Coverage Matter So Much More in McKinley County Than Almost Anywhere Else?
Because the health burden here is not comparable to the national baseline. Let me show you exactly what CDC PLACES 2023 data says about McKinley County's 68,797 residents — and then explain what that means for an elder trying to navigate two separate healthcare systems alone.
McKinley County, NM — Key Health Indicators vs. Approximate U.S. Benchmarks (CDC PLACES 2023)
Source: CDC PLACES 2022–2023 data for McKinley County, NM (population 68,797). U.S. benchmarks are approximate national averages from CDC for reference. cdc.gov/places
That 35.7% fair-or-poor health rate is not an abstraction. It means that in a county of 68,797 people — a significant majority of whom are Native — more than one in three adults wakes up every day in a body that is struggling. That is the context for the question "should I sign up for Medicare?" The answer is not a financial calculation. It is a survival calculation.
The 38.2% loneliness rate (CDC PLACES 2023) is not a soft metric either. Social isolation among elders is directly associated with accelerated cognitive decline, worsened diabetes management, and cardiovascular outcomes. When an elder on the Navajo Nation lives 45 miles from Gallup Indian Medical Center with no transportation — and that elder hasn't seen a doctor in two years because Contract Health Services ran out of referral funds in September — that loneliness number gets written into the stroke rate (6.0%) and the cancer screening gap (only 40.7% of adults aged 45–75 are up to date on colorectal cancer screening, versus approximately 68% nationally).
Coordinated IHS + Medicare coverage closes gaps that neither system can close alone. That is not a program slogan. That is what the data shows.
Which Hospitals in McKinley County Are IHS Facilities — and Which Accept Medicare?
McKinley County has four hospitals in the CMS database. Every elder — and every adult child helping an elder navigate this — should know exactly what each one is, what it does, and how it fits into a dual-coverage scenario. (Source: CMS Hospital Compare, cms.gov.)
Gallup Indian Medical Center
📍 516 E. Nizhoni Blvd., Gallup, NM 87301
📞 (505) 722-1000
Emergency services: Yes
CMS Overall Rating: 2 stars
The primary IHS acute care hospital serving the Navajo Area in McKinley County. Bills Medicare for eligible patients. When your elder has Medicare and receives care here, Medicare is billed and the reimbursement stays at GIMC. This is the largest IHS inpatient facility in the county.
IHS Facility EmergencyCrownpoint Healthcare Facility
📍 Junction of Hwy 371, Crownpoint, NM 87313
📞 (505) 786-5291
Emergency services: Yes
CMS Overall Rating: Not Available
IHS acute care hospital serving the eastern Navajo Nation communities in McKinley County. Crownpoint is geographically critical — for elders in the eastern chapter areas, this is a much shorter drive than Gallup. Also bills Medicare for eligible patients.
IHS Facility EmergencyZuni Comprehensive Community Health Center
📍 Route 301 North B Street, Zuni, NM 87327
📞 (505) 782-4431
Emergency services: No
CMS Overall Rating: Not Available
IHS-affiliated facility serving Zuni Pueblo. Note: no emergency services. For Zuni elders, emergency care requires transport to Gallup or Albuquerque. This distinction is critical when evaluating whether a Medicare Advantage plan's network is adequate for Zuni Pueblo elders specifically.
IHS / TribalRehoboth McKinley Christian Health Care Services
📍 1901 Red Rock Drive, Gallup, NM 87301
📞 (505) 863-7000
Emergency services: Yes
CMS Overall Rating: Not Available
A Critical Access Hospital (CAH) — the only non-IHS hospital in the county with emergency services. CAH status means higher Medicare reimbursement rates, which helps keep the facility viable in a rural, low-density county. For dual-eligible elders with Medicare Advantage, this facility's network participation is essential to check.
Critical Access Hospital Emergency⚠️ The 2-star rating at Gallup Indian Medical Center matters — but context matters more. CMS star ratings for IHS facilities are notoriously difficult to interpret. IHS hospitals operate under chronic underfunding, serve populations with severe chronic disease burdens, and have limited control over social determinants of health — the very factors that drive star ratings down. A 2-star rating at GIMC does not mean you should avoid it. It means the federal government has chronically underfunded it. For most Navajo and Zuni elders in McKinley County, GIMC and Crownpoint remain the most culturally appropriate, linguistically accessible, and geographically feasible options for routine and acute care.
How Exactly Does IHS Bill Medicare When I Have Both — Step by Step?
Most elders — and honestly, most people who work in healthcare — cannot explain how IHS-Medicare coordination actually works. Here it is in plain language:
How IHS Coordinates with Medicare: The Payment Flow
The bottom line: enrolling in Medicare costs most dual-eligible McKinley County elders nothing out of pocket (Medicaid covers the Part B premium) and directly benefits their IHS facility. There is no financial downside to enrollment for an elder who qualifies for both Medicare and Centennial Care.