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Best hospitals in Waterloo, Iowa

CMS lists 2 active hospitals in Waterloo, Iowa. 2 offer emergency services. The highest CMS overall rating here is 4 stars, held by MercyOne Waterloo Medical Center.

Compare the top 2
Hospitals
2
With a CMS star rating
2
Rated 5 stars
0
Emergency services
2
Beds
657

Best hospitals in Waterloo, Iowa, by measure

The best result among Waterloo, Iowa hospitals that report each measure, from the latest CMS data. Small differences between hospitals are often not statistically meaningful.

MeasureBest in WaterlooResultNational
Overall star ratingHigher is better · 2 hospitals reporting · Statewide rankingMercyOne Waterloo Medical Center4—
Heart attack death rateLower is better · 2 hospitals reporting · Statewide rankingMercyOne Waterloo Medical Center11.5%11.9%
Heart failure death rateLower is better · 2 hospitals reporting · Statewide rankingMercyOne Waterloo Medical Center8.5%11.1%
Stroke death rateLower is better · 2 hospitals reporting · Statewide rankingMercyOne Waterloo Medical Center10.2%11.9%
Hospital-wide readmission rateLower is better · 2 hospitals reporting · Statewide rankingMercyOne Waterloo Medical Center13.9%15.0%
Serious complicationsLower is better · 2 hospitals reporting · Statewide rankingMercyOne Waterloo Medical Center0.981.00
Central line bloodstream infectionsLower is better · 2 hospitals reporting · Statewide rankingMercyOne Waterloo Medical Center1.011.00
Time in emergency departmentLower is better · 2 hospitals reporting · Statewide rankingAllen Hospital163 min162 min

All hospitals in Waterloo, Iowa

Sorted by CMS overall star rating, then size. CMS data as of Sep 30, 2026.

HospitalCMS overall ratingPatient survey ratingEmergency servicesBeds
MercyOne Waterloo Medical CenterAcute care hospitalYes423Compare
Allen HospitalAcute care hospitalYes234Compare