Mercyone Waterloo Medical Center in Waterloo, IA
In a medical emergency, call 911. This page is for information only.
About Mercyone Waterloo Medical Center
Mercyone Waterloo Medical Center is an acute care hospital in Waterloo, Black Hawk County, Iowa. It reports its ownership to Medicare as nonprofit (church-affiliated). It provides emergency services. It is listed as a Level III trauma center. Its CMS Overall Hospital Quality Star Rating is 4 out of 5. It has 346 licensed beds, according to state license data via HIFLD. CMS also lists an inpatient rehabilitation unit inside the hospital. It meets the CMS Birthing-Friendly designation criteria for maternity care. The nearest other listed hospital is Allen Hospital, about 4.3 mi away.
Quality ratings
How this hospital compares with the national rate on each measure group:
Source: Centers for Medicare & Medicaid Services, Hospital General Information. How star ratings work.
Emergency room times
Lower times are better. Reporting period ending September 2025. Source: CMS Timely and Effective Care. What these numbers mean.
Infections and sepsis care
- MRSA bloodstream infectionsNo different · SIR 0.45
- Catheter-associated urinary tract infections (CAUTI)No different · SIR 0.21
- Clostridioides difficile (C. diff) infectionsBetter than national · SIR 0.52
- Central line bloodstream infections (CLABSI)No different · SIR 1.01
- Surgical site infections after colon surgeryNo different · SIR 0.79
57% of patients with severe sepsis or septic shock received all the recommended early care steps (SEP-1). Higher is better.
SIR is the standardized infection ratio: below 1 means fewer infections than predicted for a hospital like this one. Period ending September 2025. Source: CMS Healthcare-Associated Infections and Timely and Effective Care.
What patients say
- Patient survey star rating
- Would definitely recommend65%
- Rated the hospital 9 or 1066%
- Completed surveys666
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
42.46433, -92.34504
Nearby hospitals
- Allen Hospital1825 Logan Avenue, Waterloo, IA · Level III traumaAcute care hospital4.3 mi
- Sartori Memorial Hospital, Inc515 College Street, Cedar Falls, IA · Level IV traumaAcute care hospital7.4 mi
- Waverly Health Center312 9th Street SW, Waverly, IA · Level IV traumaCritical access hospital19 mi
- Mental Health Institute2277 Iowa Avenue, Independence, IAPsychiatric hospital22 mi
- Buchanan County Health Center1600 First St East, Independence, IA · Emergency roomCritical access hospital22 mi
- Grundy County Memorial Hospital201 East J Avenue, Grundy Center, IA · Level IV traumaCritical access hospital22 mi
Frequently asked questions
Where is Mercyone Waterloo Medical Center located?
Mercyone Waterloo Medical Center is at 3421 West Ninth Street, Waterloo, IA 50702 in Black Hawk County.
Does Mercyone Waterloo Medical Center have an emergency room?
Yes. Mercyone Waterloo Medical Center reports emergency services to Medicare, and patients spent a median of 223 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of Mercyone Waterloo Medical Center?
Mercyone Waterloo Medical Center has a CMS Overall Hospital Quality Star Rating of 4 out of 5. The rating combines measures of mortality, safety of care, readmission, patient experience and timely and effective care, compared with hospitals nationwide.
Is Mercyone Waterloo Medical Center a trauma center?
Yes. It is listed as a Level III trauma center in the HIFLD hospitals data, which is compiled from state trauma registries (source date April 2024). Trauma designations are renewed periodically, so confirm with the Iowa EMS or trauma program. In an emergency, call 911: paramedics take seriously injured patients to the right trauma center.
What is the phone number of Mercyone Waterloo Medical Center?
The main phone number on record with Medicare is (319) 272-8000.
Would patients recommend Mercyone Waterloo Medical Center?
In the most recent HCAHPS patient survey (666 completed surveys), 65% of patients said they would definitely recommend the hospital, and 66% rated it 9 or 10 out of 10.
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