Acute Care Hospitals · Voluntary non-profit - Private
Mount Sinai South Nassau
- One Healthy Way, Oceanside, NY 11572
- (516) 632-3000
- Acute Care Hospitals
- Emergency services available 24/7
At a glance
Mount Sinai South Nassau carries a 3-star CMS overall rating — in line with the national norm. On healthcare-associated infection measures, it performs better than the national average on 12 and worse on 0. For 30-day readmissions, it beats the national rate on 0 measures and trails on 3.
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 | — | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Upper Confidence Limit | 0.659 | Better than national |
| Central Line Associated Bloodstream Infection: Number of Device Days | 4356 | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Predicted Cases | 4.547 | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Observed Cases | 0 | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards) | 0.000 | Better than national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Lower Confidence Limit | 0.103 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Upper Confidence Limit | 1.103 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Number of Urinary Catheter Days | 5972 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Predicted Cases | 7.405 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Observed Cases | 3 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards) | 0.405 | Same as national |
| SSI - Colon Surgery: Lower Confidence Limit | 0.067 | Same as national |
| SSI - Colon Surgery: Upper Confidence Limit | 1.317 | Same as national |
| SSI - Colon Surgery: Number of Procedures | 202 | Same as national |
| SSI - Colon Surgery: Predicted Cases | 5.017 | Same as national |
| SSI - Colon Surgery: Observed Cases | 2 | Same as national |
| SSI - Colon Surgery | 0.399 | Same as national |
| SSI - Abdominal Hysterectomy: Lower Confidence Limit | 0.241 | Same as national |
| SSI - Abdominal Hysterectomy: Upper Confidence Limit | 4.750 | Same as national |
| SSI - Abdominal Hysterectomy: Number of Procedures | 187 | Same as national |
| SSI - Abdominal Hysterectomy: Predicted Cases | 1.391 | Same as national |
| SSI - Abdominal Hysterectomy: Observed Cases | 2 | Same as national |
| SSI - Abdominal Hysterectomy | 1.438 | Same as national |
| MRSA Bacteremia: Lower Confidence Limit | 0.123 | Same as national |
| MRSA Bacteremia: Upper Confidence Limit | 1.321 | Same as national |
| MRSA Bacteremia: Patient Days | 92284 | Same as national |
| MRSA Bacteremia: Predicted Cases | 6.180 | Same as national |
| MRSA Bacteremia: Observed Cases | 3 | Same as national |
| MRSA Bacteremia | 0.485 | Same as national |
| Clostridium Difficile (C.Diff): Lower Confidence Limit | 0.047 | Better than national |
| Clostridium Difficile (C.Diff): Upper Confidence Limit | 0.285 | Better than national |
| Clostridium Difficile (C.Diff): Patient Days | 85428 | Better than national |
| Clostridium Difficile (C.Diff): Predicted Cases | 38.876 | Better than national |
| Clostridium Difficile (C.Diff): Observed Cases | 5 | Better than national |
| Clostridium Difficile (C.Diff) | 0.129 | 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 | 4.1 | Same as national | 53 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality Rate | 3.5 | Better than national | 2638 |
| Death rate for heart attack patients | 10.8 | Same as national | 262 |
| Death rate for CABG surgery patients | — | Not available | — |
| Death rate for COPD patients | 7.8 | Same as national | 223 |
| Death rate for heart failure patients | 9.4 | Better than national | 643 |
| Death rate for pneumonia patients | 14.1 | Better than national | 1269 |
| Death rate for stroke patients | 11.8 | Same as national | 331 |
| Pressure ulcer rate | 0.37 | Same as national | 9892 |
| Death rate among surgical inpatients with serious treatable complications | 152.64 | Same as national | 80 |
| Iatrogenic pneumothorax rate | 0.16 | Same as national | 10960 |
| In-hospital fall-associated fracture rate | 0.27 | Same as national | 11077 |
| Postoperative hemorrhage or hematoma rate | 2.12 | Same as national | 2062 |
| Postoperative acute kidney injury requiring dialysis rate | 1.43 | Same as national | 520 |
| Postoperative respiratory failure rate | 7.54 | Same as national | 498 |
| Perioperative pulmonary embolism or deep vein thrombosis rate | 3.15 | Same as national | 2016 |
| Postoperative sepsis rate | 5.50 | Same as national | 487 |
| Postoperative wound dehiscence rate | 1.80 | Same as national | 471 |
| Abdominopelvic accidental puncture or laceration rate | 1.32 | Same as national | 2214 |
| CMS Medicare PSI 90: Patient safety and adverse events composite | 0.85 | 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 | 7.3 | Not available | 224 |
| Hospital return days for heart failure patients | 8.9 | Not available | 679 |
| Hospital return days for pneumonia patients | 61.6 | Not available | 1236 |
| Hybrid Hospital-Wide All-Cause Readmission Measure (HWR) | 15.9 | Worse than national | 4373 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies) | 12.8 | Same as national | 1068 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapy | 14.6 | Worse than national | 186 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy | 5.1 | Same as national | 186 |
| Ratio of unplanned hospital visits after hospital outpatient surgery | 1 | Same as national | 756 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission Rate | 13.6 | Same as national | 224 |
| Rate of readmission for CABG | — | Not available | — |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patients | 18.2 | Same as national | 238 |
| Heart failure (HF) 30-Day Readmission Rate | 18.7 | Same as national | 679 |
| Rate of readmission after hip/knee replacement | 6 | Same as national | 39 |
| Pneumonia (PN) 30-Day Readmission Rate | 19.1 | Worse than national | 1236 |
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 | 2 | 799 |
| Doctor communication - star rating | 3 | 799 |
| Communication about medicines - star rating | 2 | 799 |
| Discharge information - star rating | 2 | 799 |
| Cleanliness - star rating | 2 | 799 |
| Quietness - star rating | 2 | 799 |
| Overall hospital rating - star rating | 2 | 799 |
| Recommend hospital - star rating | 3 | 799 |
| Summary star rating | 2 | 799 |
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 | — | — |
| Hospital Harm - Opioid Related Adverse Events | — | — |
| Healthcare workers given influenza vaccination | 64 | 5082 |
| 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 | 228 | 378 |
| 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 | 221 | 355 |
| Average (median) time psychiatric/mental health patients spent in the emergency department before leaving from the visit. A lower number of minutes is better | 352 | 23 |
| 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 | 2 | 73078 |
| Head CT results | 88 | 16 |
| Endoscopy/polyp surveillance: appropriate follow-up interval for normal colonoscopy in average risk patients | 99 | 130 |
| Improvement in Patient's Visual Function within 90 Days Following Cataract Surgery | — | — |
| ST-Segment Elevation Myocardial Infarction (STEMI) | — | — |
| Safe Use of Opioids - Concurrent Prescribing | 14 | 4015 |
| Appropriate care for severe sepsis and septic shock | 83 | 133 |
| Septic Shock 3-Hour Bundle | 92 | 36 |
| Septic Shock 6-Hour Bundle | 100 | 20 |
| Severe Sepsis 3-Hour Bundle | 87 | 133 |
| Severe Sepsis 6-Hour Bundle | 98 | 83 |
| Discharged on Antithrombotic Therapy | 98 | 276 |
| Anticoagulation Therapy for Atrial Fibrillation/Flutter | 83 | 48 |
| Antithrombotic Therapy by End of Hospital Day 2 | 97 | 257 |
| Venous Thromboembolism Prophylaxis | — | — |
| Intensive Care Unit Venous Thromboembolism Prophylaxis | — | — |
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 Mount Sinai South Nassau rated?
- Mount Sinai South Nassau has a 3 out of 5 CMS overall star rating as of the latest CMS release.
- Does Mount Sinai South Nassau have emergency services?
- Yes. Mount Sinai South Nassau operates a 24/7 emergency department.
- Where is Mount Sinai South Nassau located?
- Mount Sinai South Nassau is located at One Healthy Way, Oceanside, NY 11572.
- What type of hospital is Mount Sinai South Nassau?
- Mount Sinai South Nassau 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.