Mount Sinai South Nassau - Hospital in Oceanside, NY

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

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Location: view on OpenStreetMap

Contact details

Telephone: 516-632-3000

Street address: ONE HEALTHY WAY, Oceanside, NY 11572

County: Nassau County

CMS ratings for Mount Sinai South Nassau

CMS Five-Star ratings roll up three areas - health inspections, quality measures, and staffing - and the overall rating is built from 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 keeps ownership and operator details on file for every certified provider; confirm current ownership directly with the provider.

About hospitals in Oceanside

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

When comparing hospitals, examine the CMS overall rating along with the measure groups behind it, confirm the services you need are available, and check whether the hospital is 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?
In the current data, Mount Sinai South Nassau holds a CMS overall star rating of 3 out of 5, with a health inspection rating of 0 out of 5 and a staffing rating of 0 out of 5. CMS publishes these ratings as informational signals, not medical advice.
Is Mount Sinai South Nassau Medicare-certified?
Yes. CMS data lists Mount Sinai South Nassau as a Medicare-certified hospital 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 sits in Nassau County. Contact phone: 516-632-3000.
Where does this information come from?
Every figure on this page comes 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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Required disclosures

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