Mount Sinai South Nassau - Hospital in Oceanside, NY

Mount Sinai South Nassau is a Medicare-certified hospital in Oceanside, NY (11572). Its CMS overall star rating is 3 out of 5 in the current data.

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Location: view on OpenStreetMap

Contact information

Phone: 516-632-3000

Address: ONE HEALTHY WAY, Oceanside, NY 11572

County: Nassau County

CMS ratings for Mount Sinai South Nassau

CMS Five-Star ratings summarize three areas: health inspections, quality measures, and staffing. The overall rating combines those domains. For Mount Sinai South Nassau, the published overall rating is 3 out of 5, with health inspections at 0 and staffing at 0.

Check Mount Sinai South Nassau on CMS Care Compare →

Inspections, fines & enforcement

CMS publishes health inspection results and any civil money penalties or enforcement actions for certified providers. The current Care Compare record is the authoritative source for Mount Sinai South Nassau.

Staffing

CMS publishes nurse staffing information for certified providers. Staffing levels vary by resident acuity; compare staffing figures alongside inspection findings when evaluating care.

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Ownership & operation

Legal name: Mount Sinai South Nassau. Ownership type: Voluntary non-profit - Private. Provider type: Acute Care Hospitals. CMS records ownership and operator information for every certified provider; confirm current ownership with the provider.

About hospitals in Oceanside

Hospitals provide inpatient medical and surgical care, emergency services, and diagnostic care. Medicare-certified hospitals receive CMS star ratings that summarize mortality, safety, readmission, patient experience, and timely and effective care.

When comparing hospitals, review the CMS overall rating and the underlying measure groups, confirm that the services you need are offered, and check whether the hospital participates in your insurance network. Ratings are signals, not medical advice. For local alternatives, browse the Hospitals directory for Oceanside, the Nassau County hospitals list, or all care types in Oceanside.

ZIP code: all care providers in ZIP 11572 · Hospitals in ZIP 11572

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Key facts

Care typeHospital
CMS overall rating3 / 5
Health inspection rating—
Quality measures rating—
Staffing rating—
Certified beds—
Residents—
OwnershipVoluntary non-profit - Private
Provider typeAcute Care Hospitals
CMS certification number330198

Frequently asked questions

What is the CMS rating for Mount Sinai South Nassau?
Mount Sinai South Nassau has a CMS overall star rating of 3 out of 5 in the current data, with a health inspection rating of 0 out of 5 and a staffing rating of 0 out of 5. Ratings are published by CMS and are informational signals, not medical advice.
Is Mount Sinai South Nassau Medicare-certified?
Yes. Mount Sinai South Nassau is listed as a Medicare-certified hospital in CMS data under certification number 330198. Confirm current participation directly with the provider.
Where is Mount Sinai South Nassau located?
ONE HEALTHY WAY, Oceanside, NY 11572. The provider is in Nassau County. Contact phone: 516-632-3000.
Where does this information come from?
All figures on this page come from the CMS Care Compare public dataset (processing date 2026-10-06). CMS has not reviewed or endorsed this site. Verify current details at Medicare.gov before making care decisions.

Data provenance

Source: CMS Hospital General Information - dataset xubh-q36u. Processing date: 2026-08-23. See the methodology page for normalization details. This profile is informational only and is not medical advice.

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Important disclosures

Informational only, not medical advice. This directory publishes public data and general information. It does not provide medical advice, diagnosis, or treatment recommendations, and it is not a substitute for consulting a qualified health care professional or Medicare.

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