of 5 stars
John T Mather Memorial Hospital Of Port Jefferson
- Location
- Port Jefferson, NY 11777
- Ownership
- Voluntary non-profit - Private
- CMS Facility ID
- 330185
- Phone
- (631) 473-1320
The CMS overall star (1 = lowest, 5 = highest) summarizes up to 5 quality groups — see what drives it below.
What's behind this 5-star rating
CMS builds the overall star from up to five measure groups, weighted as shown. This is how John T Mather Memorial Hospital Of Port Jefferson compares to national on the measures in each group — it explains the rating without reproducing CMS's exact internal model. More on the data →
Patient experience
From the CMS HCAHPS patient survey (Medicare). Star ratings are 1–5; higher is better. Reporting period: Jul 2024 – Jun 2025
Mortality & safety
Reporting period: Apr 2021 – Jun 2024
| Measure | This hospital | National | vs. national |
|---|---|---|---|
| Complications — hip/knee replacement | 2.6% | 3.6% | No different |
| Death rate — COPD (30-day) | 8.2% | 8.8% | No different |
| Death rate — heart attack (30-day) | 11.2% | 12.2% | No different |
| Death rate — heart failure (30-day) | 9.0% | 11.6% | Better than avg |
| Death rate — pneumonia (30-day) | 9.8% | 16.2% | Better than avg |
| Death rate — stroke (30-day) | 11.9% | 13.3% | No different |
| Serious complications (PSI-90 composite) | 0.93 | 1.00 | No different |
Readmissions
Reporting period: Jul 2021 – Jun 2024
| Measure | This hospital | National | vs. national |
|---|---|---|---|
| Hospital-wide readmission (30-day) | 12.2% | 15.0% | Better than avg |
| Readmission — COPD | 16.3% | 18.2% | No different |
| Readmission — heart attack | 13.3% | 13.6% | No different |
| Readmission — heart failure | 19.0% | 19.7% | No different |
| Readmission — hip/knee replacement | 4.8% | 4.8% | No different |
| Readmission — pneumonia | 14.4% | 16.0% | No different |
Infections
Reporting period: Jul 2024 – Jun 2025
| Measure | This hospital | National | vs. national |
|---|---|---|---|
| C. difficile (C. diff) infection | 0.05 | 1.00 | Better than avg |
| Catheter urinary-tract infection (CAUTI) | 0.30 | 1.00 | No different |
| Central-line bloodstream infection (CLABSI) | 0.00 | 1.00 | Better than avg |
| MRSA bloodstream infection | 0.63 | 1.00 | No different |
| Surgical-site infection — colon surgery | 0.30 | 1.00 | No different |
Timely & effective care
Reporting period: Jan 2024 – Jun 2025
| Measure | This hospital | National | vs. national |
|---|---|---|---|
| Healthcare workers vaccinated for flu | 73.0% | 78.0% | |
| Left ED before being seen | 1.0% | 2.0% | |
| Median ED time before leaving | 245 min | 161 min | |
| Sepsis bundle compliance | 74.0% | 64.0% |
CMS Care Compare measures (largely a Medicare population). Rates are this hospital's reported value vs the national figure for the same measure; “better / worse than average” is CMS's own statistical comparison. Mortality, readmission, and infection measures are risk-adjusted; lower is better for those, higher is better for screening, sepsis care, and patient experience. How to read these →
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