Acute Care Hospitals · Voluntary non-profit - Private
Mercy Hospital St Louis
- 615 New Ballas Road, Saint Louis, MO 63141
- (314) 251-6000
- Acute Care Hospitals
- Emergency services available 24/7
At a glance
Mercy Hospital St Louis carries a 4-star CMS overall rating — above the national norm. On healthcare-associated infection measures, it performs better than the national average on 18 and worse on 0. For 30-day readmissions, it beats the national rate on 0 measures and trails on 1.
Healthcare-Associated Infections
lower is better · 36 measures reported
Rates of infections patients can acquire while receiving care, such as central-line and catheter-associated infections, MRSA, and C. difficile.
| Measure | Score | Compared to national |
|---|---|---|
| Central Line Associated Bloodstream Infection (ICU + select Wards): Lower Confidence Limit | 0.150 | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Upper Confidence Limit | 0.564 | Better than national |
| Central Line Associated Bloodstream Infection: Number of Device Days | 23586 | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Predicted Cases | 29.263 | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Observed Cases | 9 | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards) | 0.308 | Better than national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Lower Confidence Limit | 0.334 | Better than national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Upper Confidence Limit | 0.961 | Better than national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Number of Urinary Catheter Days | 14854 | Better than national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Predicted Cases | 23.868 | Better than national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Observed Cases | 14 | Better than national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards) | 0.587 | Better than national |
| SSI - Colon Surgery: Lower Confidence Limit | 0.335 | Same as national |
| SSI - Colon Surgery: Upper Confidence Limit | 1.106 | Same as national |
| SSI - Colon Surgery: Number of Procedures | 633 | Same as national |
| SSI - Colon Surgery: Predicted Cases | 17.287 | Same as national |
| SSI - Colon Surgery: Observed Cases | 11 | Same as national |
| SSI - Colon Surgery | 0.636 | Same as national |
| SSI - Abdominal Hysterectomy: Lower Confidence Limit | 0.175 | Same as national |
| SSI - Abdominal Hysterectomy: Upper Confidence Limit | 1.869 | Same as national |
| SSI - Abdominal Hysterectomy: Number of Procedures | 487 | Same as national |
| SSI - Abdominal Hysterectomy: Predicted Cases | 4.369 | Same as national |
| SSI - Abdominal Hysterectomy: Observed Cases | 3 | Same as national |
| SSI - Abdominal Hysterectomy | 0.687 | Same as national |
| MRSA Bacteremia: Lower Confidence Limit | 0.396 | Same as national |
| MRSA Bacteremia: Upper Confidence Limit | 1.188 | Same as national |
| MRSA Bacteremia: Patient Days | 239944 | Same as national |
| MRSA Bacteremia: Predicted Cases | 18.247 | Same as national |
| MRSA Bacteremia: Observed Cases | 13 | Same as national |
| MRSA Bacteremia | 0.712 | Same as national |
| Clostridium Difficile (C.Diff): Lower Confidence Limit | 0.137 | Better than national |
| Clostridium Difficile (C.Diff): Upper Confidence Limit | 0.243 | Better than national |
| Clostridium Difficile (C.Diff): Patient Days | 197717 | Better than national |
| Clostridium Difficile (C.Diff): Predicted Cases | 254.642 | Better than national |
| Clostridium Difficile (C.Diff): Observed Cases | 47 | Better than national |
| Clostridium Difficile (C.Diff) | 0.185 | Better than national |
Complications & Deaths
lower is better · 20 measures reported
Rates of serious complications (like hip/knee replacement problems or accidental cuts during surgery) and 30-day mortality rates for common conditions.
| Measure | Score | Compared to national | Sample |
|---|---|---|---|
| Rate of complications for hip/knee replacement patients | 3.3 | Same as national | 166 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality Rate | 3 | Better than national | 2963 |
| Death rate for heart attack patients | 12 | Same as national | 195 |
| Death rate for CABG surgery patients | 2.7 | Same as national | 180 |
| Death rate for COPD patients | 8.1 | Same as national | 133 |
| Death rate for heart failure patients | 8.8 | Better than national | 807 |
| Death rate for pneumonia patients | 12.1 | Better than national | 679 |
| Death rate for stroke patients | 11.1 | Same as national | 385 |
| Pressure ulcer rate | 0.22 | Same as national | 11307 |
| Death rate among surgical inpatients with serious treatable complications | 200.35 | Same as national | 189 |
| Iatrogenic pneumothorax rate | 0.20 | Same as national | 13288 |
| In-hospital fall-associated fracture rate | 0.30 | Same as national | 13264 |
| Postoperative hemorrhage or hematoma rate | 2.62 | Same as national | 3250 |
| Postoperative acute kidney injury requiring dialysis rate | 1.21 | Same as national | 1445 |
| Postoperative respiratory failure rate | 9.34 | Same as national | 1390 |
| Perioperative pulmonary embolism or deep vein thrombosis rate | 5.04 | Same as national | 3378 |
| Postoperative sepsis rate | 4.35 | Same as national | 1398 |
| Postoperative wound dehiscence rate | 1.93 | Same as national | 740 |
| Abdominopelvic accidental puncture or laceration rate | 0.58 | Same as national | 2173 |
| CMS Medicare PSI 90: Patient safety and adverse events composite | 0.89 | Same as national | — |
Unplanned Hospital Visits & Readmissions
lower is better · 14 measures reported
How often patients return to the hospital unexpectedly within 30 days of discharge — a marker of care quality and discharge planning.
| Measure | Score | Compared to national | Sample |
|---|---|---|---|
| Hospital return days for heart attack patients | 6.4 | Not available | 195 |
| Hospital return days for heart failure patients | 3.8 | Not available | 905 |
| Hospital return days for pneumonia patients | 47.7 | Not available | 688 |
| Hybrid Hospital-Wide All-Cause Readmission Measure (HWR) | 15.1 | Same as national | 5270 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies) | 11.4 | Same as national | 5582 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapy | 11.9 | Same as national | 632 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy | 4.5 | Same as national | 632 |
| Ratio of unplanned hospital visits after hospital outpatient surgery | 0.9 | Same as national | 1529 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission Rate | 14.3 | Same as national | 195 |
| Rate of readmission for CABG | 13.5 | Same as national | 175 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patients | 18.6 | Same as national | 143 |
| Heart failure (HF) 30-Day Readmission Rate | 19.4 | Same as national | 905 |
| Rate of readmission after hip/knee replacement | 5.7 | Same as national | 171 |
| Pneumonia (PN) 30-Day Readmission Rate | 18.8 | Worse than national | 688 |
Patient Experience (HCAHPS)
higher is better · 9 measures reported
What patients say about their hospital stay — communication with nurses and doctors, responsiveness, cleanliness, pain management, and whether they would recommend the hospital.
| Measure | Score | Sample |
|---|---|---|
| Nurse communication - star rating | 4 | 1387 |
| Doctor communication - star rating | 3 | 1387 |
| Communication about medicines - star rating | 3 | 1387 |
| Discharge information - star rating | 4 | 1387 |
| Cleanliness - star rating | 1 | 1387 |
| Quietness - star rating | 4 | 1387 |
| Overall hospital rating - star rating | 4 | 1387 |
| Recommend hospital - star rating | 5 | 1387 |
| Summary star rating | 4 | 1387 |
Timely & Effective Care
higher is better (unless a wait time) · 30 measures reported
How consistently hospitals follow recommended care processes — for example, giving heart-attack patients aspirin on arrival, or the average time spent in the emergency department.
| Measure | Score | Sample |
|---|---|---|
| Emergency department volume | very high | — |
| Global Malnutrition Composite Score | — | — |
| Global Malnutrition Composite Score: Malnutrition Diagnosis Documented | — | — |
| Global Malnutrition Composite Score: Malnutrition Risk Screening | — | — |
| Global Malnutrition Composite Score: Nutrition Assessment | — | — |
| Global Malnutrition Composite Score: Nutritional Care Plan | — | — |
| Hospital Harm - Severe Hyperglycemia | — | — |
| Hospital Harm - Severe Hypoglycemia | 1 | 7442 |
| Hospital Harm - Opioid Related Adverse Events | — | — |
| Healthcare workers given influenza vaccination | 94 | 8382 |
| Average (median) time all patients spent in the emergency department before leaving from the visit, including psychiatric/mental health patients and patients who were transferred to another facility. A lower number of minutes is better | 220 | 458 |
| Average (median) time patients spent in the emergency department before leaving from the visit, excluding patients transferred to another facility or psychiatric care/mental health patients. A lower number of minutes is better | 217 | 413 |
| Average (median) time psychiatric/mental health patients spent in the emergency department before leaving from the visit. A lower number of minutes is better | 244 | 43 |
| Average (median) time patients spent in the emergency department before being transferred to another facility. A lower number of minutes is better | — | — |
| Left before being seen | 4 | 101472 |
| Head CT results | — | — |
| Endoscopy/polyp surveillance: appropriate follow-up interval for normal colonoscopy in average risk patients | 99 | 111 |
| Improvement in Patient's Visual Function within 90 Days Following Cataract Surgery | — | — |
| ST-Segment Elevation Myocardial Infarction (STEMI) | — | — |
| Safe Use of Opioids - Concurrent Prescribing | 17 | 14234 |
| Appropriate care for severe sepsis and septic shock | 77 | 281 |
| Septic Shock 3-Hour Bundle | 79 | 84 |
| Septic Shock 6-Hour Bundle | 98 | 42 |
| Severe Sepsis 3-Hour Bundle | 85 | 281 |
| Severe Sepsis 6-Hour Bundle | 96 | 116 |
| Discharged on Antithrombotic Therapy | — | — |
| Anticoagulation Therapy for Atrial Fibrillation/Flutter | — | — |
| Antithrombotic Therapy by End of Hospital Day 2 | — | — |
| Venous Thromboembolism Prophylaxis | 94 | 17860 |
| Intensive Care Unit Venous Thromboembolism Prophylaxis | 99 | 4659 |
Maternal Health
lower is better · 4 measures reported
Measures of maternal outcomes and safe delivery practices, including severe complications during childbirth.
| Measure | Score | Sample |
|---|---|---|
| Cesarean Birth | — | — |
| Risk Adjusted Severe Obstetric Complications (All) | — | — |
| Risk Adjusted Severe Obstetric Complications (excluding blood-transfusion-only cases) | — | — |
| Maternal Morbidity Structural Measure | Yes | — |
Frequently asked questions
- How is Mercy Hospital St Louis rated?
- Mercy Hospital St Louis has a 4 out of 5 CMS overall star rating as of the latest CMS release.
- Does Mercy Hospital St Louis have emergency services?
- Yes. Mercy Hospital St Louis operates a 24/7 emergency department.
- Where is Mercy Hospital St Louis located?
- Mercy Hospital St Louis is located at 615 New Ballas Road, Saint Louis, MO 63141.
- What type of hospital is Mercy Hospital St Louis?
- Mercy Hospital St Louis is classified by CMS as a Acute Care Hospitals facility (Voluntary non-profit - Private).
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Data as of 2026-06-14. Source: CMS Provider Data Catalog. This is public data provided for informational purposes only and is not medical advice. See our methodology and editorial policy.