Complications & Deaths Measures
20
CMS-tracked
Connecticut · Acute Care
Greenwich Hospital Association -
According to PlainHospital's CMS star-rating ranking (CMS Hospital Compare overall stars), Greenwich Hospital Association - ranks #93 of 3182 rated US hospitals by overall star rating (highest = #1).
- 5★
- CMS overall rating
- #93 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.
5 Perryridge Rd, Greenwich, CT 06830 · Fairfield County · (203) 863-3000
The verdict
According to PlainHospital's CMS star-rating ranking (CMS Hospital Compare overall stars), Greenwich Hospital Association - ranks #93 of 3182 rated US hospitals by overall star rating (highest = #1). Overall CMS stars: 5/5 (above the 3.2-star national average).
- 5 / 5
- CMS overall star rating
- #93 of 3182
- rated-hospital corpus placement
- 5
- measures better than national of 24 compared
- Yes
- emergency department on site
Since the last CMS release
CMS raised this hospital from 4 to 5 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 Greenwich Hospital Association - sits among rated US hospitals
5 Top 12% higher than 88% of 3,182 rated hospitals
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, share, and where it sits relative to this entry.
Source CMS Hospital Compare, overall hospital rating · 2026-08-14
Greenwich Hospital Association - vs. Connecticut and the nation
- Greenwich Hospital A…
Greenwich Hospital Association -
5 stars
- Connecticut avg
Connecticut state average
3.4 stars
- US avg
National average
3.2 stars
What this shows At 5 stars, Greenwich Hospital Association - rates above the Connecticut average of 3.4 and above the national average of 3.2.
Type
Acute Care Hospitals
Ownership
Voluntary non-profit - Private
Emergency Services
Yes
Birthing Friendly
Yes
Patient Experience
17
HCAHPS domains
Infection Types
6
CDC NHSN
CMS Overall Star Rating 100.0%
5 of 5 stars
Quality profile vs. the national benchmark
Mortality 7 measures
Safety of care 7 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 | 0.83 | Same as National |
| CMS Medicare PSI 90: Patient safety and adverse events composite | 0.92 | Same as National |
| Death rate among surgical inpatients with serious treatable complications | 162 | Same as National |
| Death rate for CABG surgery patients | N/A | Not Available |
| Death rate for COPD patients | 7.3 | Same as National |
| Death rate for heart attack patients | 10.6 | Same as National |
| Death rate for heart failure patients | 8.6 | Better than National |
| Death rate for pneumonia patients | 14 | Better than National |
| Death rate for stroke patients | 10.9 | Same as National |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality Rate | 3.1 | Better than National |
| Iatrogenic pneumothorax rate | 0.15 | Same as National |
| In-hospital fall-associated fracture rate | 0.24 | Same as National |
| Perioperative pulmonary embolism or deep vein thrombosis rate | 4.57 | Same as National |
| Postoperative acute kidney injury requiring dialysis rate | 1.57 | Same as National |
| Postoperative hemorrhage or hematoma rate | 2.52 | 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 | 4 |
| 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 | 3 |
| Doctor communication - linear mean score | N/A |
| Doctor communication - star rating | 3 |
| Nurse communication - linear mean score | N/A |
| Nurse communication - star rating | 4 |
| Overall hospital rating - linear mean score | N/A |
| Overall hospital rating - star rating | 4 |
| Quietness - linear mean score | N/A |
| Quietness - star rating | 3 |
| Recommend hospital - linear mean score | N/A |
| Recommend hospital - star rating | 4 |
| Summary star rating | 3 |
Safety & Infections
| Measure | Score | vs. National |
|---|---|---|
| Catheter Associated Urinary Tract Infections (ICU + select Wards) | 0.239 | Same as National |
| Central Line Associated Bloodstream Infection (ICU + select Wards) | 0.746 | Same as National |
| Clostridium Difficile (C.Diff) | 0.297 | Better than National |
| MRSA Bacteremia | 0 | Same as National |
| SSI - Abdominal Hysterectomy | N/A | Not Available |
| SSI - Colon Surgery | 0.772 | Same as National |
Staffing & Spending
Unplanned Visits & Readmissions
| Measure | Score | vs. National |
|---|---|---|
| Acute Myocardial Infarction (AMI) 30-Day Readmission Rate | 15.6 | Same as National |
| Heart failure (HF) 30-Day Readmission Rate | 20 | Same as National |
| Hospital return days for heart attack patients | 70.9 | More Days Than Average per 100 Discharges |
| Hospital return days for heart failure patients | 36.2 | More Days Than Average per 100 Discharges |
| Hospital return days for pneumonia patients | 22.5 | More Days Than Average per 100 Discharges |
| Hybrid Hospital-Wide All-Cause Readmission Measure (HWR) | 14.7 | Same as National |
| Pneumonia (PN) 30-Day Readmission Rate | 16.7 | Same as National |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy | 4.3 | Same as National |
| Rate of inpatient admissions for patients receiving outpatient chemotherapy | 10.5 | Same as National |
| Rate of readmission after hip/knee replacement | 3.7 | Same as National |
| Rate of readmission for CABG | N/A | Not Available |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patients | 18.3 | Same as National |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies) | 11.4 | Same as National |
| Ratio of unplanned hospital visits after hospital outpatient surgery | 0.8 | Same as National |
Medicare Spending
| Measure | Score |
|---|---|
| Medicare hospital spending per patient (Medicare Spending per Beneficiary) | 0.94 |
Maternal Health
| Measure | Score |
|---|---|
| Cesarean Birth | N/A |
| Maternal Morbidity Structural Measure | N/A |
| Risk Adjusted Severe Obstetric Complications (All) | N/A |
| Risk Adjusted Severe Obstetric Complications (excluding blood-transfusion-only cases) | N/A |
Nearby Hospitals in Connecticut
Other Medicare-certified hospitals in Connecticut.
Albert J Solnit Children's Center - South Campus
Middletown, CT
No rating Psychiatric
Bridgeport Hospital
Bridgeport, CT
4/5
Acute Care Hospitals
Bristol Hospital
Bristol, CT
2/5
Acute Care Hospitals
Charlotte Hungerford Hospital
Torrington, CT
3/5
Acute Care Hospitals
Connecticut Childrens Medical Center
Hartford, CT
No rating Childrens
Connecticut Mental Health Center
New Haven, CT
No rating Psychiatric
Compare Greenwich Hospital Association - vs Albert J Solnit Children's Center - South Campus →
Hospital Quality Guides
Frequently Asked Questions
How does Greenwich Hospital Association - compare to other hospitals on CMS star rating?
According to PlainHospital's CMS star-rating ranking, Greenwich Hospital Association - ranks #93 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 for the exact sort basis.
What is the CMS star rating for Greenwich Hospital Association -?
Greenwich Hospital Association - has an overall CMS star rating of 5 out of 5, above the 3.2-star national average.
How does Greenwich Hospital Association - perform on quality measures?
5 of 24 compared mortality, safety, and readmission measures rate better than the national average at Greenwich Hospital Association -; 3 rate worse.
What do patients say about Greenwich Hospital Association -?
Greenwich Hospital Association - reports 17 HCAHPS patient-experience domain scores. Star ratings range from 2 to 4 out of 5.
What are the infection rates at Greenwich Hospital Association -?
Greenwich Hospital Association - tracks 6 healthcare-associated infection types (CDC NHSN). 1 are better than the national benchmark, 0 are worse, and 4 are at the national average.
Does Greenwich Hospital Association - have emergency services?
Yes, Greenwich Hospital Association - provides emergency services.
What type of hospital is Greenwich Hospital Association -?
Greenwich Hospital Association - is a Acute Care Hospitals facility with Voluntary non-profit - Private ownership, located in Greenwich, CT. This facility has received the CMS Birthing-Friendly designation.
How much does Medicare spend at Greenwich Hospital Association -?
1 Medicare spending category is on file for Greenwich Hospital Association -, per episode vs. the national median.
Does Greenwich Hospital Association - offer maternal health services?
Yes, Greenwich Hospital Association - reports 4 maternal health measures. This facility has been designated as Birthing-Friendly by CMS.
Data Sources
Source: Centers for Medicare & Medicaid Services (CMS) Hospital Compare. Last refreshed from CMS: . About PlainHospital
Read our methodology & full data source list
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