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O.A.S.I.S. Hospital: what a joint replacement costs

Phoenix, AZ 85008 · CMS Certification Number 030131. 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
$8,972
Gateway Surgery Center, same ZIP
Outpatient here
$12,765
226 Medicare cases, APC 5115
Inpatient here
$13,226
83 Medicare stays, MS-DRG 470

Medicare prices at O.A.S.I.S. Hospital

OperationInpatient paidList priceList ÷ paidOutpatient allowed
Hip or knee replacement$13,226$77,8795.9×$12,765
Shoulder replacement———$18,131

Quality

64 beds

Arizona has a certificate-of-need program that does not cover surgery centers.

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Questions

How much does Medicare pay O.A.S.I.S. Hospital for a knee or hip replacement?

In 2024 Medicare paid O.A.S.I.S. Hospital an average of $13,226 per inpatient hip or knee replacement stay (MS-DRG 470, 83 stays) and $12,765 per outpatient case (APC 5115, 226 cases).

What is O.A.S.I.S. Hospital's list price for a joint replacement?

The hospital's average list (chargemaster) price for an inpatient hip or knee replacement was $77,879, 5.9× what Medicare paid. 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 O.A.S.I.S. Hospital?

Yes for Medicare facility payments. Gateway Surgery Center, an orthopedic surgery center same ZIP away, is paid about $8,972 by Medicare for a knee replacement (CPT 27447), $4,254 less than an inpatient stay at O.A.S.I.S. Hospital. Not every patient is a surgery-center candidate.

How does O.A.S.I.S. Hospital compare with other Arizona hospitals?

Medicare paid O.A.S.I.S. Hospital less than 97% of the 29 Arizona hospitals that report inpatient hip or knee replacement.