Complications & Deaths Measures
20
CMS-tracked
Wisconsin · Acute Care
Ascension Columbia St Marys Hospital Milwaukee
According to PlainHospital's CMS star-rating ranking (CMS Hospital Compare overall stars), Ascension Columbia St Marys Hospital Milwaukee ranks #1379 of 3182 rated US hospitals by overall star rating (highest = #1).
- 3★
- CMS overall rating
- 27th pct.
- national percentile
- #1379 of 3182
- Corpus placement
- 20
- Quality measures
- 6
- Infection types
Data currency: Hospital quality, safety, and patient-experience measures from the CMS Care Compare program (published quarterly), last refreshed May 2026. See our methodology for source dates. Spot a figure that looks wrong? Report a correction.
2323 N Lake Dr, Milwaukee, WI 53211 · Milwaukee County · (414) 585-1374
The verdict
According to PlainHospital's CMS star-rating ranking (CMS Hospital Compare overall stars), Ascension Columbia St Marys Hospital Milwaukee ranks #1379 of 3182 rated US hospitals by overall star rating (highest = #1). That corpus rank reflects a below-median CMS star rating nationally, with 3 quality measures beating the national benchmark.
- 27th pct.
- CMS star rating vs 3,182 rated US hospitals
- #1379 of 3182
- rated-hospital corpus placement
- 3
- measures better than national of 24 compared
- Yes
- emergency department on site
Since the last CMS release
CMS raised this hospital from 2 to 3 stars between its May 2026 and August 2026 releases, a gain of 1.
CMS replaces its file at each release rather than publishing a changelog, so this comparison exists only because the earlier release is kept on file. See what changed nationally.
Where Ascension Columbia St Marys Hospital Milwaukee sits among rated US hospitals
3 Around the middle higher than 27% of 3,182 rated hospitals
CMS star rating (1–5 stars), bucketed by value
Each bar is a band; taller bars hold more rated hospitals. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source CMS Hospital Compare, overall hospital rating · 2026-08-14
Ascension Columbia St Marys Hospital Milwaukee vs. Wisconsin and the nation
- Ascension Columbia S…
Ascension Columbia St Marys Hospital Milwaukee
3 stars
- Wisconsin avg
Wisconsin state average
3.8 stars
- US avg
National average
3.2 stars
What this shows At 3 stars, Ascension Columbia St Marys Hospital Milwaukee rates below the Wisconsin average of 3.8 and below the national average of 3.2.
Type
Acute Care Hospitals
Ownership
Voluntary non-profit - Church
Emergency Services
Yes
Birthing Friendly
Yes
Patient Experience
17
HCAHPS domains
Infection Types
6
CDC NHSN
CMS Overall Star Rating 60.0%
3 of 5 stars
Better-than-national profile for Ascension Columbia St Marys Hospital Milwau…
Mortality 8 measures
Safety of care 6 measures
Readmission 10 measures
Better than national Same as national Worse than national
Quality Measures
| Measure | Score | vs. National |
|---|---|---|
| Abdominopelvic accidental puncture or laceration rate | 1.17 | Same as National |
| CMS Medicare PSI 90: Patient safety and adverse events composite | 0.94 | Same as National |
| Death rate among surgical inpatients with serious treatable complications | 161.13 | Same as National |
| Death rate for CABG surgery patients | 2.5 | Same as National |
| Death rate for COPD patients | 8.2 | Same as National |
| Death rate for heart attack patients | 13.4 | Same as National |
| Death rate for heart failure patients | 10.8 | Same as National |
| Death rate for pneumonia patients | 14.6 | Same as National |
| Death rate for stroke patients | 11.9 | Same as National |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality Rate | 4 | Same as National |
| Iatrogenic pneumothorax rate | 0.22 | Same as National |
| In-hospital fall-associated fracture rate | 0.27 | Same as National |
| Perioperative pulmonary embolism or deep vein thrombosis rate | 3.47 | Same as National |
| Postoperative acute kidney injury requiring dialysis rate | 1.72 | Same as National |
| Postoperative hemorrhage or hematoma rate | 2.14 | Same as National |
Patient Experience (HCAHPS)
Experience profile vs. the national average
Source: CMS Hospital Compare, HCAHPS patient survey star ratings.
| Survey Question | Star Rating |
|---|---|
| Cleanliness - linear mean score | N/A |
| Cleanliness - star rating | 3 |
| Communication about medicines - linear mean score | N/A |
| Communication about medicines - star rating | 2 |
| Discharge information - linear mean score | N/A |
| Discharge information - star rating | 2 |
| Doctor communication - linear mean score | N/A |
| Doctor communication - star rating | 3 |
| Nurse communication - linear mean score | N/A |
| Nurse communication - star rating | 2 |
| Overall hospital rating - linear mean score | N/A |
| Overall hospital rating - star rating | 2 |
| Quietness - linear mean score | N/A |
| Quietness - star rating | 3 |
| Recommend hospital - linear mean score | N/A |
| Recommend hospital - star rating | 3 |
| Summary star rating | 2 |
Safety & Infections
| Measure | Score | vs. National |
|---|---|---|
| Catheter Associated Urinary Tract Infections (ICU + select Wards) | 0.312 | Better than National |
| Central Line Associated Bloodstream Infection (ICU + select Wards) | 0.377 | Better than National |
| Clostridium Difficile (C.Diff) | 0.497 | Better than National |
| MRSA Bacteremia | 0.439 | Same as National |
| SSI - Abdominal Hysterectomy | N/A | Not Available |
| SSI - Colon Surgery | 0.814 | Same as National |
Staffing & Spending
Unplanned Visits & Readmissions
| Measure | Score | vs. National |
|---|---|---|
| Acute Myocardial Infarction (AMI) 30-Day Readmission Rate | 13.6 | Same as National |
| Heart failure (HF) 30-Day Readmission Rate | 19.2 | Same as National |
| Hospital return days for heart attack patients | 4.9 | Average Days per 100 Discharges |
| Hospital return days for heart failure patients | -21.9 | Fewer Days Than Average per 100 Discharges |
| Hospital return days for pneumonia patients | -3.2 | Average Days per 100 Discharges |
| Hybrid Hospital-Wide All-Cause Readmission Measure (HWR) | 13.7 | Same as National |
| Pneumonia (PN) 30-Day Readmission Rate | 14.2 | Same as National |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy | 4.9 | Same as National |
| Rate of inpatient admissions for patients receiving outpatient chemotherapy | 8.4 | Same as National |
| Rate of readmission after hip/knee replacement | N/A | Number of Cases Too Small |
| Rate of readmission for CABG | 11.4 | Same as National |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patients | 17.3 | Same as National |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies) | 14.8 | Same as National |
| Ratio of unplanned hospital visits after hospital outpatient surgery | 1 | Same as National |
Medicare Spending
| Measure | Score |
|---|---|
| Medicare hospital spending per patient (Medicare Spending per Beneficiary) | 0.98 |
Maternal Health
CMS maternal-care measures reported for this facility. The Hospital Compare maternal extract lists measure names and reporting windows; it does not publish numeric scores or sample sizes in the corpus we ingest, so those columns are omitted rather than filled with N/A.
| Measure |
|---|
| Cesarean Birth |
| Maternal Morbidity Structural Measure |
| Risk Adjusted Severe Obstetric Complications (All) |
| Risk Adjusted Severe Obstetric Complications (excluding blood-transfusion-only cases) |
Nationwide hospitals with similar CMS profiles
Peer sets for Ascension Columbia St Marys Hospital Milwaukee outside Wisconsin, keyed to the strong better-than-national share.
Similar CMS star rating
Nearest overall stars outside WI (3/5 here).
Similar mortality outcomes
Nearest mortality measures rated better than national, outside WI (0 better here).
Nearby Hospitals in Wisconsin
Other Medicare-certified hospitals in Wisconsin.
One of 140 Medicare-certified hospitals in Wisconsin, 6 are shown here.
Amery Hospital & Clinic
Amery, WI
2/5
Critical Access Hospitals
Ascension All Saints Hospital
Racine, WI
2/5
Acute Care Hospitals
Ascension Calumet Hospital
Chilton, WI
No rating Critical Access Hospitals
Ascension NE Wisconsin - St Elizabeth Campus
Appleton, WI
4/5
Acute Care Hospitals
Ascension SE Wisconsin Hospital
Milwaukee, WI
5/5
Acute Care Hospitals
Ascension St Francis Hospital
Milwaukee, WI
3/5
Acute Care Hospitals
Compare Ascension Columbia St Marys Hospital Milwaukee vs Amery Hospital & Clinic →
What to do with Ascension Columbia St Marys Hospital Milwau…
Use this page's CMS-sourced figures as a starting filter, not a final verdict.
- See how every Wisconsin hospital compares on star rating and the same quality measures. Wisconsin hospitals
- Compare Ascension Columbia St Marys Hospital Milwau… directly against another hospital, measure by measure. Compare hospitals
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CMS Hospital Compare figures are informational only, not medical advice; always consult your care team.
Frequently Asked Questions
How does Ascension Columbia St Marys Hospital Milwaukee compare to other hospitals on CMS star rating?
According to PlainHospital's CMS star-rating ranking, Ascension Columbia St Marys Hospital Milwaukee ranks #1379 of 3182 rated US hospitals by overall star rating (highest = #1). That ordinal matches our top-rated hospital listing (star_rating DESC). See /methodology#corpus-placement.
What is the CMS star rating for Ascension Columbia St Marys Hospital Milwaukee?
Ascension Columbia St Marys Hospital Milwaukee has an overall CMS star rating of 3 out of 5 (mid-band), below the 3.2-star national average.
How does Ascension Columbia St Marys Hospital Milwaukee perform on quality measures?
3 of 24 compared mortality, safety, and readmission measures rate better than the national average at Ascension Columbia St Marys Hospital Milwaukee (strong better-share tercile); 0 rate worse (typical).
What do patients say about Ascension Columbia St Marys Hospital Milwaukee?
Ascension Columbia St Marys Hospital Milwaukee reports 17 HCAHPS patient-experience domain scores. Star ratings range from 2 to 3 out of 5.
What are the infection rates at Ascension Columbia St Marys Hospital Milwaukee?
Ascension Columbia St Marys Hospital Milwaukee tracks 6 healthcare-associated infection types (CDC NHSN). 3 are better than the national benchmark, 0 are worse, and 2 are at the national average.
Does Ascension Columbia St Marys Hospital Milwaukee have emergency services?
Yes, Ascension Columbia St Marys Hospital Milwaukee provides emergency services.
What type of hospital is Ascension Columbia St Marys Hospital Milwaukee?
Ascension Columbia St Marys Hospital Milwaukee is a Acute Care Hospitals facility with Voluntary non-profit - Church ownership, located in Milwaukee, WI. This facility has received the CMS Birthing-Friendly designation.
How much does Medicare spend at Ascension Columbia St Marys Hospital Milwaukee?
1 Medicare spending category is on file for Ascension Columbia St Marys Hospital Milwaukee, per episode vs. the national median.
Does Ascension Columbia St Marys Hospital Milwaukee offer maternal health services?
Yes, Ascension Columbia St Marys Hospital Milwaukee reports 4 maternal health measures. This facility has been designated as Birthing-Friendly by CMS.
Read our methodology & full data source list · Source: CMS Hospital Compare · measure windows