TL;DR — The Short Answer

What Are Critical Access Hospitals — And Why Does Pennington County Care?

Let me explain Critical Access Hospital (CAH) status the way someone who grew up far from a city would understand it: it's the difference between a community having a hospital at all, or having nothing.

Under federal law, a Critical Access Hospital is a rural hospital that has 25 or fewer acute care inpatient beds, is located more than 35 miles from another hospital (or 15 miles over mountainous terrain), and provides 24/7 emergency services. In exchange for meeting those requirements, CAHs receive cost-based Medicare reimbursement at 101% of their allowable costs — as opposed to the standard prospective payment system that larger urban hospitals use. That extra 1% above cost isn't profit. It's a buffer against the next mechanical breakdown, the next staff shortage, the next winter storm that spikes patient volume.

Now here's what matters for you in Pennington County: the county seat of Rapid City has Monument Health Rapid City Hospital at 353 Fairmont Blvd — a 4-star acute care facility with a full emergency department, rated directly by CMS. (Source: CMS Hospital Compare, medicare.gov/care-compare.) That hospital is not a CAH. But Pennington County does not exist in a bubble.

The county sits in the middle of western South Dakota's Black Hills region. Surrounding counties — Custer, Fall River, Haakon, Jones, Ziebach, Meade, and Butte — are among the most sparsely populated in the entire continental United States. Several of those counties' only hospitals carry CAH designation. If even one of those CAHs cuts services or closes under the weight of reimbursement reductions, the patients who can't drive 90 miles to Rapid City — and in western South Dakota, that drive is real — end up at Monument Health. That ripple effect strains everyone's access, including yours.

101%
Current Medicare cost-based reimbursement rate for Critical Access Hospitals under federal law. Proposed 2027 budget measures would cut this to 90–95%, a reduction that on paper sounds small — but for a CAH operating on a 1–3% margin, it's existential.
Source: CMS.gov Rural Health Policy, HRSA Federal Office of Rural Health Policy

What Exactly Are the Proposed 2027 Cuts — And Who Proposed Them?

In 2025 and into 2026, federal budget reconciliation discussions included proposals to reduce or restructure the cost-based reimbursement formula that keeps Critical Access Hospitals alive. The specific proposals circulating in congressional budget offices range from reducing CAH reimbursement to 95% of allowable costs (a so-called "modest trim") to more aggressive proposals that would move some CAH service lines to the standard Prospective Payment System — effectively ending the CAH protection for those services.

The American Hospital Association and the National Rural Health Association have both formally opposed these cuts, citing analysis that a reduction to 95% would push approximately 40% of currently operational CAHs into negative operating margins. (Source: National Rural Health Association policy brief, NRHA.org.) At 90%, that figure climbs above 60%.

The Flex Monitoring Team at the University of Minnesota — which tracks CAH financial performance under a HRSA cooperative agreement — has published data showing that the median CAH operating margin nationally is already a razor-thin 1.6%. Any downward adjustment to the 101% reimbursement rate is not an abstraction. It is the difference between a CAH making payroll in February and shutting its doors. (Source: flexmonitoring.org.)

South Dakota has 46 hospitals statewide, and the majority of those outside Sioux Falls and Rapid City are CAH-designated. The HRSA Health Resources & Services Administration lists 36 Critical Access Hospitals in South Dakota as of the most recent data cycle. (Source: data.hrsa.gov.) That is 36 facilities, spread across a state that covers 77,000 square miles, where the next option is often 50, 70, or 100 miles down a two-lane highway.

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Who in Pennington County Is Most at Risk From These Cuts?

This is the part I want to make crystal clear for every reader who found this article by typing a search into their phone: if you are on disability Medicare — meaning you qualified for Medicare because of a disability, not because you turned 65 — you are in a specific category of vulnerability here, and it has nothing to do with your age.

Disability Medicare beneficiaries are often younger, have more complex chronic conditions, and depend more heavily on specialty and hospital care than the average senior Medicare beneficiary. The CDC PLACES 2023 data for Pennington County tells a stark story about the health burden in this county:

Pennington County, SD — Adult Health & Disability Burden (CDC PLACES 2023)

Pennington County SD Health Measures — CDC PLACES 2023 Percent of Adults (%) 0% 10% 20% 30% 40% 13.3% Mobility Disability 13.7% Cognitive Disability 4.2% Vision Disability 9.9% Diabetes (Diagnosed) 33.7% Obesity 3.5% Stroke Source: CDC PLACES 2023 — Pennington County, SD (Population: 115,903)

CDC PLACES 2023. Data values represent percentage of adults in Pennington County, SD. places.cdc.gov

Look at those numbers carefully. 13.3% of Pennington County adults have a mobility disability — that is approximately 15,400 people out of a population of 115,903 who have difficulty walking or moving. (Source: CDC PLACES 2023, places.cdc.gov.) For them, "just drive to the next hospital" isn't a real option.

Add to that 13.7% with a cognitive disability — roughly 15,870 adults — many of whom rely on disability Medicare precisely because cognitive impairment qualified them before age 65. And 9.9% diagnosed with diabetes, a condition that frequently requires specialist access, lab work, and — if complications arise — hospital-level care.

A 33.7% adult obesity rate in Pennington County is not a lifestyle statistic. It is a predictor of cardiovascular disease, Type 2 diabetes complications, and joint disease — all of which generate the kind of healthcare utilization that depends on nearby, accessible hospital facilities.

And the stroke rate: 3.5% of Pennington County adults have had a stroke. Stroke is a time-sensitive emergency. The clinical window for the most effective stroke treatment — tPA (clot-busting medication) — is 3 to 4.5 hours from symptom onset. If a CAH in your surrounding region closes and the nearest emergency department is now Monument Health in Rapid City — 40, 60, or 90 minutes away depending on where you live — that window may not be achievable.

What Hospitals Serve Pennington County Right Now — And What's the Actual Gap?

CMS Hospital Compare lists three hospital facilities in Pennington County as of April 2026:

Hospital Name Address Type Emergency Services CMS Overall Rating
Monument Health Rapid City Hospital 353 Fairmont Blvd, Rapid City, SD 57701
(605) 755-1000
Acute Care Hospital ✔ Yes 4 Stars
Black Hills Surgical Hospital LLC 216 Anamaria Dr, Rapid City, SD 57703
(605) 721-4700
Acute Care Hospital (Surgical Specialty) ✘ No Not Available
Same Day Surgery Center LLC 651 Cathedral Drive, Rapid City, SD 57701
(605) 755-9900
Acute Care Hospital (Outpatient Surgical) ✘ No Not Available

Source: CMS Hospital Compare, medicare.gov/care-compare, accessed April 2026.

Here is what that table means in plain English: Pennington County has exactly one hospital with an emergency department. Monument Health Rapid City Hospital is a fine facility — 4 stars from CMS is a genuine achievement. But it is one facility. Black Hills Surgical Hospital and Same Day Surgery Center serve planned procedures; neither has an emergency department. If Monument Health becomes overwhelmed because surrounding CAHs in Custer County or Fall River County have cut their services, there is no redundancy in Pennington County itself.

This is the hidden danger of CAH reimbursement cuts for urban-adjacent rural counties like Pennington. Your county hospital doesn't close — but the ecosystem around it collapses, and the pressure lands on your doorstep.

If You're on Disability Medicare in Rapid City — How Does This Change Your Coverage?

Here's the question I know you're really asking: Will my Medicare still work? Will my doctors still be covered? Will I still be able to get to a hospital?

The honest answer depends on which type of Medicare you have.

If You Have Original (Traditional) Medicare — Part A + Part B

Your coverage itself does not change based on CAH reimbursement policy. Medicare Part A covers inpatient hospital stays regardless of whether the facility is a CAH or a standard acute care hospital. What changes is the availability of facilities willing to accept Medicare patients in your region. If a CAH closes, that facility is no longer available — period. But your Medicare card remains valid at any facility that accepts Medicare.

Important nuance: CAH patients under Original Medicare pay a coinsurance of 20% of the Medicare-approved amount for most services after meeting their Part A deductible. The Part A deductible in 2026 is $1,676 per benefit period. (Source: medicare.gov/basics/costs/medicare-costs.)

If You Have a Medicare Advantage Plan (Part C)

This is where things get complicated — and where disability Medicare beneficiaries in Pennington County need to be most alert. Medicare Advantage plans build their coverage around specific networks of hospitals, doctors, and other providers. If a CAH near you was previously in your plan's network and it cuts services or closes, your plan may not update its directory immediately. You could show up at a facility expecting in-network care and receive a very different bill.

Furthermore, as 2027 approaches and CAH closures become more likely in the Black Hills region, Medicare Advantage carriers may proactively narrow their networks — dropping facilities from coverage lists before those facilities formally close. This is legal. CMS requires plans to maintain "adequate access" but the definition of adequate in a rural setting is contested.

The South Dakota Department of Labor and Regulation Insurance Division confirms that as of the 2026 plan year, Medicare Advantage plans are available in Pennington County through multiple national carriers. (Source: dlr.sd.gov/insurance.) You should obtain a current Evidence of Coverage document from your plan — not just the Summary of Benefits — and verify which specific hospitals are listed as in-network facilities.

What About Telehealth — Is That Actually Useful in Pennington County?

For once in this article, I have some straightforwardly good news. Pennington County is not the most isolated county in South Dakota. Rapid City is a genuine regional hub, and I-90 and US-16 corridors have driven broadband investment in this part of the state. The Federal Communications Commission's 2023 Broadband Data Collection shows that the Rapid City metro area has substantially higher broadband availability than the surrounding western South Dakota counties. (Source: broadbandmap.fcc.gov.)

CMS extended core telehealth flexibilities through at least December 2026 under the Consolidated Appropriations Act, and legislation is pending to make many of those extensions permanent. For disability Medicare beneficiaries in Pennington County, telehealth can meaningfully cover:

Telehealth is not a substitute for emergency care. If you're having a stroke, a heart attack, or a serious fall, you need Monument Health's emergency department — and you need it quickly. But for the 13.7% of Pennington County adults with cognitive disability who struggle with transportation logistics, telehealth visits can significantly reduce the frequency of necessary trips to a physical facility.

If your current Medicare Advantage plan has poor telehealth coverage — or charges a copay for telehealth visits — that is worth scrutinizing before the October 15 Open Enrollment Period begins.

What Is the October 15 Open Enrollment Deadline — And Why Does It Matter for This Specifically?

Medicare's Annual Open Enrollment Period (OEP) runs from October 15 through December 7 each year, with coverage changes taking effect January 1. For 2027 coverage, the OEP is October 15 – December 7, 2026.

Why does this matter for the CAH reimbursement issue? Because the federal budget process that will determine whether CAH cuts become law is playing out right now — in 2026. Decisions made in Washington in 2026 will produce a 2027 payment rule that becomes effective January 1, 2027