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St. Catherine of Siena Hospital

St. Catherine of Siena Hospital is a Medicare-certified dialysis center in Smithtown, New York, independently operated. CMS gives it a 2-star rating — CMS rates this facility below the national average on measured quality of patient care.

★★☆☆☆ 2 / 5 CMS Quality of Patient Care rating · what this means

Location & contact

50 Route 25a, Dialysis Unit
Smithtown, NY 11787 · Suffolk County

(631) 862-3707 (click to call)

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Services & details

In-center hemodialysisPeritoneal dialysis

Facility details for St. Catherine of Siena Hospital
Dialysis stations18
OwnershipIndependent (Non-profit)
Medicare-certified since2000-03-01
CMS Certification Number332405

CMS quality measures

CMS quality measures for St. Catherine of Siena Hospital
MeasureResultContext
Patient survivalBetter than ExpectedCMS category comparing observed vs expected patient survival
Mortality rate14.8 deaths per 100 patient-yearsLower is better
Hospitalization rate173.5 admissions per 100 patient-years (As Expected)Lower is better
Hospital readmission26.6% (As Expected)30-day unplanned readmissions; lower is better
Blood transfusion rate38.2 per 100 patient-years (As Expected)Lower is better

Measures are risk-adjusted by CMS so facilities treating sicker patients aren't penalized. A single measure never tells the whole story — read how CMS calculates these.

Before you visit: call (631) 862-3707 to confirm chair availability, treatment times, and that the center accepts your insurance or Medicare plan. Data from the CMS April 2026 release; details can change between quarterly updates.

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