St. Catherine of Siena Hospital
St. Catherine of Siena Hospital is a Medicare-certified dialysis center in Smithtown, NY, certified since 2000. In the October 2026 CMS release it has 3 stars for cms star rating; the New York average is 3.0. CMS rates it better than expected for patient survival.
Address50 Route 25A, Dialysis Unit, Smithtown, NY 11787
Phone(631) 862-3707
OwnershipNon-profit
Dialysis stations18
Medicare certifiedMarch 2000
CountySuffolk
CMS Certification Number332405
Services
CMS star rating
3 of 5
CMS's 1-5 star rating for dialysis centers, built from patient survival, hospital admissions, readmissions, transfusions, infections and other outcomes, adjusted for how sick each center's patients are. The average for rated dialysis centers in New York is 3.0 stars.
Outcomes compared with what CMS expected
Patient survivalDeaths among the center's patients, compared with what CMS expected given how sick they were.
Better than expected
Hospital admissionsHow often patients were admitted to a hospital, compared with what CMS expected.
As expected
Readmissions after a hospital stayHow often patients went back into the hospital within 30 days of leaving it.
As expected
Blood transfusionsHow often patients needed a blood transfusion, compared with what CMS expected.
As expected
Emergency department visitsEmergency department visits that did not lead to an admission, compared with what CMS expected.
As expected
Verdicts are CMS's own, comparing this center's patients with what CMS expected given how sick they were. Lower is better for hospital admissions, readmissions after a hospital stay, blood transfusions, emergency department visits. Medians are of every dialysis center CMS reports a figure for.
Day-to-day care
Patients on a kidney transplant waitlistShare of the center's patients who are on a waitlist for a kidney transplant.
23%
U.S. median 15% · NY 20%
Adults getting enough dialysis (hemodialysis)Share of adult hemodialysis patients whose Kt/V, a measure of how well dialysis clears waste, was at least 1.2.
99%
U.S. median 98% · NY 97%
Adults with a long-term catheterShare of adult patients dialyzing through a catheter for 90 days or more. A fistula or graft carries less risk of infection.
23%
U.S. median 18% · NY 18%
Adults with high calciumShare of adult patients with serum calcium above 10.2 mg/dL.
3%
U.S. median 1% · NY 1%
Lower is better for adults with a long-term catheter, adults with high calcium. Medians are of every dialysis center CMS reports a figure for.
Other dialysis centers near St. Catherine of Siena Hospital
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DaVita Smithtown DialysisSmithtown, NY<0.1 mi
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FMC Hauppauge Dialysis CenterHauppauge, NY2.4 mi
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3.7 mi
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FMC Coram Dialysis CenterCentereach, NY6.9 mi
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DCI - Stony Brook Kidney CenterEast Setauket, NY7.9 mi
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DaVita Huntington On Broadway DialysisHuntington Station, NY8.3 mi
Distances are approximate, measured between ZIP code centers.
Hospitals near St. Catherine of Siena Hospital
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St Catherine of Siena HospitalSmithtown, NY · Emergency departmentCMS overall rating
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St Catherine of Siena Med CtrSmithtown, NY
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Pilgrim Psychiatric CenterBrentwood, NY
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Northport VA Medical CenterNorthport, NY · Emergency department
More near Smithtown
Source: CMS Dialysis Facility Compare (Provider Data Catalog dataset 23ew-n7w9). October 2026 release. This site is not affiliated with St. Catherine of Siena Hospital or with CMS. Report a problem with this page.