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Compare hospitals

2 hospitals, measured against each other and the national benchmark.

Selected hospitals

Latest measures

The most recent value CMS reported for each measure. “Best” marks the strongest of the selected hospitals; badges compare each hospital with the national benchmark. Small differences may not be meaningful.

Showing 24 of 24 measures

The small strip places each hospital (colored dot) relative to the national value (gray line). For measures with a better direction, further right is better.

Latest CMS values for MercyOne Waterloo Medical Center, Allen Hospital and the national benchmark, grouped by category. The best of the selected hospitals is marked “Best”.
MeasureMercyOne Waterloo Medical CenterWaterloo, IAAllen HospitalWaterloo, IANationalU.S. benchmark
Overall
Overall star rating2026 release4 starsBest of the selected hospitals3 starsNo benchmark
Patient experience
Patient survey star rating2026 release3 starsWorse than national3 starsWorse than national3.3 stars
Patients' overall rating2026 release86/100Worse than national87/100Best of the selected hospitalsWorse than national87.9/100
Patients would recommend2026 release86/100Worse than national87/100Best of the selected hospitalsSame as national87/100
Outcomes
Heart attack death rate2026 release11.5%Best of the selected hospitalsBetter than national12.5%Worse than national11.9%
Heart failure death rate2026 release8.5%Best of the selected hospitalsBetter than national15.8%Worse than national11.1%
Pneumonia death rate2026 release19.4%Worse than national18.7%Best of the selected hospitalsWorse than national15.2%
COPD death rate2026 release9.4%Best of the selected hospitalsWorse than national10.8%Worse than national8.6%
CABG surgery death rate2026 releaseNot reported2.4%Same as national2.4%
Stroke death rate2026 release10.2%Best of the selected hospitalsBetter than national12.4%Worse than national11.9%
Hospital-wide readmission rate2025 release13.9%Best of the selected hospitalsBetter than national15.6%Worse than national15%
Safety
Serious complications2026 release0.98Best of the selected hospitalsBetter than national1.10Worse than national1.00
Central line bloodstream infections2026 release1.01Best of the selected hospitalsWorse than national1.16Worse than national1.00
Catheter-associated urinary tract infections2026 release0.21Best of the selected hospitalsBetter than national0.54Better than national1.00
Surgical site infections (colon)2026 release0.79Best of the selected hospitalsBetter than national1.76Worse than national1.00
Surgical site infections (hysterectomy)2026 releaseNot reportedNot reported1.00
MRSA bloodstream infections2026 release0.45Better than national0.00Best of the selected hospitalsBetter than national1.00
C. diff infections2026 release0.52Better than national0.23Best of the selected hospitalsBetter than national1.00
Timely care
Time in emergency department2026 release223 minWorse than national163 minBest of the selected hospitalsWorse than national162 min
Left ED without being seen2026 release10%Worse than national3%Best of the selected hospitalsWorse than national2%
Effective care
Appropriate sepsis care2026 release57%Worse than national62%Best of the selected hospitalsWorse than national65%
Health care workers vaccinated for flu2026 release78%Same as national91%Best of the selected hospitalsBetter than national78%
Cost
Medicare spending per patient2026 release0.89Best of the selected hospitalsBetter than national0.93Better than national1.00
Capacity
Total beds2026 release423234No benchmark

Overall

  • Overall star rating

    2026 release
    MercyOne Waterloo Medical Center
    4 starsBest of the selected hospitals
    Allen Hospital
    3 stars
    National
    No benchmark

Patient experience

  • Patient survey star rating

    2026 release
    MercyOne Waterloo Medical Center
    3 starsWorse than national
    Allen Hospital
    3 starsWorse than national
    National
    3.3 stars
  • Patients' overall rating

    2026 release
    MercyOne Waterloo Medical Center
    86/100Worse than national
    Allen Hospital
    87/100Best of the selected hospitalsWorse than national
    National
    87.9/100
  • Patients would recommend

    2026 release
    MercyOne Waterloo Medical Center
    86/100Worse than national
    Allen Hospital
    87/100Best of the selected hospitalsSame as national
    National
    87/100

Outcomes

  • Heart attack death rate

    2026 release
    MercyOne Waterloo Medical Center
    11.5%Best of the selected hospitalsBetter than national
    Allen Hospital
    12.5%Worse than national
    National
    11.9%
  • Heart failure death rate

    2026 release
    MercyOne Waterloo Medical Center
    8.5%Best of the selected hospitalsBetter than national
    Allen Hospital
    15.8%Worse than national
    National
    11.1%
  • Pneumonia death rate

    2026 release
    MercyOne Waterloo Medical Center
    19.4%Worse than national
    Allen Hospital
    18.7%Best of the selected hospitalsWorse than national
    National
    15.2%
  • COPD death rate

    2026 release
    MercyOne Waterloo Medical Center
    9.4%Best of the selected hospitalsWorse than national
    Allen Hospital
    10.8%Worse than national
    National
    8.6%
  • CABG surgery death rate

    2026 release
    MercyOne Waterloo Medical Center
    Not reported
    Allen Hospital
    2.4%Same as national
    National
    2.4%
  • Stroke death rate

    2026 release
    MercyOne Waterloo Medical Center
    10.2%Best of the selected hospitalsBetter than national
    Allen Hospital
    12.4%Worse than national
    National
    11.9%
  • Hospital-wide readmission rate

    2025 release
    MercyOne Waterloo Medical Center
    13.9%Best of the selected hospitalsBetter than national
    Allen Hospital
    15.6%Worse than national
    National
    15%

Safety

  • Serious complications

    2026 release
    MercyOne Waterloo Medical Center
    0.98Best of the selected hospitalsBetter than national
    Allen Hospital
    1.10Worse than national
    National
    1.00
  • Central line bloodstream infections

    2026 release
    MercyOne Waterloo Medical Center
    1.01Best of the selected hospitalsWorse than national
    Allen Hospital
    1.16Worse than national
    National
    1.00
  • Catheter-associated urinary tract infections

    2026 release
    MercyOne Waterloo Medical Center
    0.21Best of the selected hospitalsBetter than national
    Allen Hospital
    0.54Better than national
    National
    1.00
  • Surgical site infections (colon)

    2026 release
    MercyOne Waterloo Medical Center
    0.79Best of the selected hospitalsBetter than national
    Allen Hospital
    1.76Worse than national
    National
    1.00
  • Surgical site infections (hysterectomy)

    2026 release
    MercyOne Waterloo Medical Center
    Not reported
    Allen Hospital
    Not reported
    National
    1.00
  • MRSA bloodstream infections

    2026 release
    MercyOne Waterloo Medical Center
    0.45Better than national
    Allen Hospital
    0.00Best of the selected hospitalsBetter than national
    National
    1.00
  • C. diff infections

    2026 release
    MercyOne Waterloo Medical Center
    0.52Better than national
    Allen Hospital
    0.23Best of the selected hospitalsBetter than national
    National
    1.00

Timely care

  • Time in emergency department

    2026 release
    MercyOne Waterloo Medical Center
    223 minWorse than national
    Allen Hospital
    163 minBest of the selected hospitalsWorse than national
    National
    162 min
  • Left ED without being seen

    2026 release
    MercyOne Waterloo Medical Center
    10%Worse than national
    Allen Hospital
    3%Best of the selected hospitalsWorse than national
    National
    2%

Effective care

  • Appropriate sepsis care

    2026 release
    MercyOne Waterloo Medical Center
    57%Worse than national
    Allen Hospital
    62%Best of the selected hospitalsWorse than national
    National
    65%
  • Health care workers vaccinated for flu

    2026 release
    MercyOne Waterloo Medical Center
    78%Same as national
    Allen Hospital
    91%Best of the selected hospitalsBetter than national
    National
    78%

Cost

  • Medicare spending per patient

    2026 release
    MercyOne Waterloo Medical Center
    0.89Best of the selected hospitalsBetter than national
    Allen Hospital
    0.93Better than national
    National
    1.00

Capacity

  • Total beds

    2026 release
    MercyOne Waterloo Medical Center
    423
    Allen Hospital
    234
    National
    No benchmark

Source: CMS Care Compare annual releases. Not reported means CMS suppressed or didn’t publish a value (for example, too few cases).