Best Hospitals in Stony Brook, NY, Graded A–F
All 1 graded Medicare-certified hospitals in Stony Brook, NY, scored from CMS Care Compare — overall rating, mortality, safety of care and readmissions — against New York hospitals of the same type. Grades are computed, never edited, and every input is shown on the hospital page.
CMS data as of Sep 2026 · graded Sep 11, 2026Grade distribution — Stony Brook, NY
A1
B0
C0
D0
F0
Highest graded
Stony Brook · CMS overall rating 5 of 5 — top 10% amon...See grade
1 hospitalsgraded in Stony Brook, NY · 1 earned an A
All New York
New York (11)Brooklyn (10)Bronx (6)Buffalo (5)Rochester (4)Syracuse (4)Albany (3)Binghamton (2)Flushing (2)
Highest in Stony Brook, NY 1
Suny/Stony Brook University Hospital - Stony Brook, NY · Acute care hospital · government - state CMS Care Compare · data as of Sep 2026
- CMS overall rating 5 of 5 — top 10% among New York acute care hospitals
- Mortality: 4 measures better than the national rate, 0 worse, of 8
- Safety: 4 measures better than the national rate, 0 worse, of 8
AScore 79 · ExcellentSee Full Grade
(631) 444-4000
Stony Brook, SUFFOLK County
Emergency dept.
Birthing-Friendly
New York hospitals by city
How we grade hospitals
What data goes into a grade?
CMS Care Compare Hospital General Information: CMS overall rating (25), Mortality (25), Safety of care (25), Readmission (25). Each metric is percentile-ranked against New York hospitals of the same type; A ≥ 72, B ≥ 58, C ≥ 42, D ≥ 28, F below. Hospitals with fewer than three of the four metrics are shown as "Not graded".
Why is a well-known hospital graded C?
The grade measures outcomes CMS reports — death rates, complications, infections, readmissions — not reputation, research or specialist rankings. A large teaching hospital that treats the sickest patients can score average on these measures. Use the grade as one input, alongside the specialists you need.
Can a hospital pay to improve its grade?
No. Grades are computed from public data and have no editable field. Nothing on this page is sponsored.