Acute Care Hospitals · Voluntary non-profit - Private
John T Mather Memorial Hospital of Port Jefferson
- 75 North Country Road, Port Jefferson, NY 11777
- (631) 473-1320
- Acute Care Hospitals
- Emergency services available 24/7
At a glance
John T Mather Memorial Hospital of Port Jefferson carries a 5-star CMS overall rating — above 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 1 measure and trails on 0.
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 | 0.749 | Better than national |
| Central Line Associated Bloodstream Infection: Number of Device Days | 3860 | Better than national |
| Central Line Associated Bloodstream Infection (ICU + select Wards): Predicted Cases | 3.997 | 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 | 0.051 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Upper Confidence Limit | 1.005 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Number of Urinary Catheter Days | 5393 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Predicted Cases | 6.573 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards): Observed Cases | 2 | Same as national |
| Catheter Associated Urinary Tract Infections (ICU + select Wards) | 0.304 | Same as national |
| SSI - Colon Surgery: Lower Confidence Limit | 0.015 | Same as national |
| SSI - Colon Surgery: Upper Confidence Limit | 1.495 | Same as national |
| SSI - Colon Surgery: Number of Procedures | 127 | Same as national |
| SSI - Colon Surgery: Predicted Cases | 3.298 | Same as national |
| SSI - Colon Surgery: Observed Cases | 1 | Same as national |
| SSI - Colon Surgery | 0.303 | Same as national |
| SSI - Abdominal Hysterectomy: Lower Confidence Limit | — | Not available |
| SSI - Abdominal Hysterectomy: Upper Confidence Limit | — | Not available |
| SSI - Abdominal Hysterectomy: Number of Procedures | 53 | Not available |
| SSI - Abdominal Hysterectomy: Predicted Cases | 0.403 | Not available |
| SSI - Abdominal Hysterectomy: Observed Cases | 0 | Not available |
| SSI - Abdominal Hysterectomy | — | Not available |
| MRSA Bacteremia: Lower Confidence Limit | 0.105 | Same as national |
| MRSA Bacteremia: Upper Confidence Limit | 2.078 | Same as national |
| MRSA Bacteremia: Patient Days | 48289 | Same as national |
| MRSA Bacteremia: Predicted Cases | 3.180 | Same as national |
| MRSA Bacteremia: Observed Cases | 2 | Same as national |
| MRSA Bacteremia | 0.629 | Same as national |
| Clostridium Difficile (C.Diff): Lower Confidence Limit | 0.002 | Better than national |
| Clostridium Difficile (C.Diff): Upper Confidence Limit | 0.231 | Better than national |
| Clostridium Difficile (C.Diff): Patient Days | 48289 | Better than national |
| Clostridium Difficile (C.Diff): Predicted Cases | 21.312 | Better than national |
| Clostridium Difficile (C.Diff): Observed Cases | 1 | Better than national |
| Clostridium Difficile (C.Diff) | 0.047 | 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 | 2.6 | Same as national | 81 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality Rate | 2.8 | Better than national | 1964 |
| Death rate for heart attack patients | 11.2 | Same as national | 182 |
| Death rate for CABG surgery patients | — | Not available | — |
| Death rate for COPD patients | 8.2 | Same as national | 159 |
| Death rate for heart failure patients | 9 | Better than national | 455 |
| Death rate for pneumonia patients | 9.8 | Better than national | 797 |
| Death rate for stroke patients | 11.9 | Same as national | 178 |
| Pressure ulcer rate | 0.56 | Same as national | 7124 |
| Death rate among surgical inpatients with serious treatable complications | 172.68 | Same as national | 67 |
| Iatrogenic pneumothorax rate | 0.14 | Same as national | 8028 |
| In-hospital fall-associated fracture rate | 0.27 | Same as national | 8188 |
| Postoperative hemorrhage or hematoma rate | 2.33 | Same as national | 1559 |
| Postoperative acute kidney injury requiring dialysis rate | 1.91 | Same as national | 483 |
| Postoperative respiratory failure rate | 8.76 | Same as national | 486 |
| Perioperative pulmonary embolism or deep vein thrombosis rate | 3.09 | Same as national | 1615 |
| Postoperative sepsis rate | 4.96 | Same as national | 441 |
| Postoperative wound dehiscence rate | 1.57 | Same as national | 563 |
| Abdominopelvic accidental puncture or laceration rate | 1.11 | Same as national | 1699 |
| CMS Medicare PSI 90: Patient safety and adverse events composite | 0.93 | 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 | 12.3 | Not available | 149 |
| Hospital return days for heart failure patients | 1.6 | Not available | 497 |
| Hospital return days for pneumonia patients | -4.3 | Not available | 839 |
| Hybrid Hospital-Wide All-Cause Readmission Measure (HWR) | 12.2 | Better than national | 3193 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies) | 12.7 | Same as national | 672 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapy | — | Not available | — |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy | — | Not available | — |
| Ratio of unplanned hospital visits after hospital outpatient surgery | 0.9 | Same as national | 505 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission Rate | 13.3 | Same as national | 149 |
| Rate of readmission for CABG | — | Not available | — |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patients | 16.3 | Same as national | 172 |
| Heart failure (HF) 30-Day Readmission Rate | 19 | Same as national | 497 |
| Rate of readmission after hip/knee replacement | 4.8 | Same as national | 83 |
| Pneumonia (PN) 30-Day Readmission Rate | 14.4 | Same as national | 839 |
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 | 527 |
| Doctor communication - star rating | 4 | 527 |
| Communication about medicines - star rating | 3 | 527 |
| Discharge information - star rating | 4 | 527 |
| Cleanliness - star rating | 5 | 527 |
| Quietness - star rating | 3 | 527 |
| Overall hospital rating - star rating | 4 | 527 |
| Recommend hospital - star rating | 4 | 527 |
| Summary star rating | 4 | 527 |
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 | medium | — |
| 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 | 73 | 3116 |
| 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 | 250 | 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 | 245 | 311 |
| Average (median) time psychiatric/mental health patients spent in the emergency department before leaving from the visit. A lower number of minutes is better | 255 | 22 |
| Average (median) time patients spent in the emergency department before being transferred to another facility. A lower number of minutes is better | 318 | 46 |
| Left before being seen | 1 | 39075 |
| Head CT results | — | — |
| Endoscopy/polyp surveillance: appropriate follow-up interval for normal colonoscopy in average risk patients | 96 | 56 |
| Improvement in Patient's Visual Function within 90 Days Following Cataract Surgery | — | — |
| ST-Segment Elevation Myocardial Infarction (STEMI) | — | — |
| Safe Use of Opioids - Concurrent Prescribing | 24 | 2308 |
| Appropriate care for severe sepsis and septic shock | 74 | 119 |
| Septic Shock 3-Hour Bundle | 88 | 26 |
| Septic Shock 6-Hour Bundle | 94 | 17 |
| Severe Sepsis 3-Hour Bundle | 82 | 119 |
| Severe Sepsis 6-Hour Bundle | 95 | 62 |
| Discharged on Antithrombotic Therapy | 100 | 99 |
| Anticoagulation Therapy for Atrial Fibrillation/Flutter | — | — |
| Antithrombotic Therapy by End of Hospital Day 2 | 95 | 85 |
| 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 | Not Applicable (our hospital does not provide inpatient labor/delivery care) | — |
Frequently asked questions
- How is John T Mather Memorial Hospital of Port Jefferson rated?
- John T Mather Memorial Hospital of Port Jefferson has a 5 out of 5 CMS overall star rating as of the latest CMS release.
- Does John T Mather Memorial Hospital of Port Jefferson have emergency services?
- Yes. John T Mather Memorial Hospital of Port Jefferson operates a 24/7 emergency department.
- Where is John T Mather Memorial Hospital of Port Jefferson located?
- John T Mather Memorial Hospital of Port Jefferson is located at 75 North Country Road, Port Jefferson, NY 11777.
- What type of hospital is John T Mather Memorial Hospital of Port Jefferson?
- John T Mather Memorial Hospital of Port Jefferson 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.