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Saint Alphonsus Regional Medical Center: what a joint replacement costs

Boise, ID 83706 · CMS Certification Number 130007. What Medicare pays this hospital for knee, hip and shoulder replacement, what it lists, how it compares, and what a surgery center nearby is paid.

Surgery center nearby
$8,634
Emerald Surgical Center, 5.3 mi
Outpatient here
$12,516
Medicare allowed amount, 326 cases, APC 5115
Inpatient here
$16,226
Avg total payment (incl. patient share), 28 Medicare stays, MS-DRG 470

Medicare prices at Saint Alphonsus Regional Medical Center

OperationInpatient avg total payment
Medicare + patient share		List priceList ÷ totalOutpatient Medicare allowed
Hip or knee replacement$16,226$57,6993.6×$12,516
Shoulder replacement———$16,949
Hip replacement after a fracture (DRG 522)$16,459$72,9214.4×—

Commercial negotiated rates (beta)

MS-DRG 470Median across insurers× Medicare total paymentLowest–highest insurerInsurers
Hip or knee replacement$42,1252.6×$39,789–$67,54017
InsurerMedian negotiated, MS-DRG 470× Medicare total paymentPlans
Cigna$67,5404.2×1
BCBS AZ$42,1252.6×1
BCBS MN$42,1252.6×1
BCBS Michigan$42,1252.6×1
BCBS NC$42,1252.6×1
BCBS TN$42,1252.6×1
Blue Cross of Idaho$42,1252.6×1
CareFirst BCBS$42,1252.6×1
Elevance/Anthem/Empire$42,1252.6×1
Excellus BCBS$42,1252.6×1
Highmark BCBS$42,1252.6×1
Horizon BCBS NJ$42,1252.6×1
Independence Blue Cross$42,1252.6×1
Kaiser Permanente$42,1252.6×1
Premera Blue Cross$42,1252.6×1
Wellmark BCBS$42,1252.6×1
Regence BlueShield$39,7892.5×1

From the hospital's price-transparency file (2026-03-31); commercial plans, dollar-amount contracts only.

From the hospital's price-transparency file (2026-03-31); commercial plans, dollar-amount contracts only.

Quality

Complications after hip or knee replacement: 4.2% (no different from the national rate). Readmissions: 5.9%. Overall Care Compare rating: 3 of 5 stars. Nonprofit · Acute · 365 beds

Idaho has no certificate-of-need law.

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Questions

How much does Medicare pay Saint Alphonsus Regional Medical Center for a knee or hip replacement?

In 2024 the average total payment to Saint Alphonsus Regional Medical Center for an inpatient hip or knee replacement stay was $16,226 (MS-DRG 470, 28 Medicare stays; Medicare's payment plus the patient's deductible and coinsurance), and the Medicare allowed amount averaged $12,516 per outpatient case (APC 5115, 326 cases).

What is Saint Alphonsus Regional Medical Center's list price for a joint replacement?

The hospital's average list (chargemaster) price for an inpatient hip or knee replacement was $57,699, 3.6× the average total payment for a Medicare stay. Almost nobody pays the list price; it matters for uninsured bills and percent-of-charge contracts.

Is a knee replacement cheaper at a surgery center near Saint Alphonsus Regional Medical Center?

Yes for Medicare facility payments. Emerald Surgical Center, an orthopedic surgery center 5.3 mi away, is paid about $8,634 by Medicare for a knee replacement (CPT 27447), $7,592 less than an inpatient stay at Saint Alphonsus Regional Medical Center. Not every patient is a surgery-center candidate.

How does Saint Alphonsus Regional Medical Center compare with other Idaho hospitals?

Saint Alphonsus Regional Medical Center's average total payment per Medicare stay is higher than 86% of the 7 Idaho hospitals that report inpatient hip or knee replacement.

What do commercial insurers pay Saint Alphonsus Regional Medical Center for a hip or knee replacement?

From the hospital's own price-transparency file, commercial plans' negotiated rates for MS-DRG 470 have a median of $42,125 across 17 insurers, ranging from $39,789 to $67,540.