Live Updated 16 min ago
1hr 17min
current ed wait
49 min longer than usual
31 min
avg today
28 min
avg overall
115 min
longest seen
Typical wait for non-urgent cases. Patients are seen in order of clinical priority. The most seriously ill are always seen first, no matter how busy the ER is.
Refreshing in 5:00
Source: Mount Sinai Health System · auto-refreshed every 30 min · details
Life-threatening symptoms? Call 911. Don't rely on this site to make that decision.
Wait time, last 24 hours
Under 30 min 30 - 60 min Over 60 min Typical next few hours
Typical wait by hour of the day

Average wait at each hour, across every reading we have.

Hour-by-hour breakdown
HourAvg. waitTrend
Today, 2 AM
avg. of 1 reading
1 hr 17 min steady
Today, 1 AM
avg. of 2 readings
1 hr 18 min rising
Today, 12 AM
avg. of 1 reading
49 min rising
Yesterday, 11 PM
avg. of 2 readings
36 min rising
Yesterday, 10 PM
avg. of 1 reading
18 min steady
Yesterday, 9 PM
avg. of 1 reading
19 min steady
Yesterday, 8 PM
avg. of 2 readings
21 min falling
Yesterday, 7 PM
avg. of 2 readings
25 min rising
Yesterday, 6 PM
avg. of 1 reading
20 min steady
Yesterday, 5 PM
avg. of 1 reading
19 min steady
Yesterday, 4 PM
avg. of 2 readings
20 min steady
Yesterday, 3 PM
avg. of 2 readings
20 min rising
Yesterday, 2 PM
avg. of 2 readings
18 min steady
Yesterday, 1 PM
avg. of 2 readings
16 min steady
Yesterday, 12 PM
avg. of 2 readings
16 min steady
Yesterday, 11 AM
avg. of 2 readings
18 min steady
Yesterday, 10 AM
avg. of 2 readings
20 min rising
Yesterday, 9 AM
avg. of 2 readings
16 min steady
Yesterday, 8 AM
avg. of 2 readings
17 min rising
Yesterday, 7 AM
avg. of 2 readings
10 min steady
Yesterday, 6 AM
avg. of 2 readings
10 min falling
Yesterday, 5 AM
avg. of 2 readings
14 min falling
Yesterday, 4 AM
avg. of 2 readings
1 hr 2 min falling
Yesterday, 3 AM
avg. of 2 readings
1 hr 35 min -
Visit Nassau County
Address
ONE HEALTHY WAY
Oceanside, NY 11572
Phone
Voluntary non-profit - Private
HoursOpen 24/7 Websitemountsinai.org
Facilities & services
435
total beds
17
operating rooms
General acute care
facility type
Emergency & critical care
Dedicated ERShock / traumaICUEmergency psych
Imaging
CTMRIDiagnostic radiology
Surgery
Inpatient surgeryCath lab
Other services
ChemotherapyRenal dialysisPsychiatric unitPharmacy
Accessibility & amenities
Wheelchair-accessible entrance Wheelchair-accessible parking Wheelchair-accessible restroom Wheelchair-accessible seating Public restrooms Free parking lot Free street parking Onsite parking Paid parking lot Paid street parking Apple Pay / Google Pay
ER performance
Typical ER visit length
Median time from arrival to leaving.
3 hr 43 min of 348 patients
Mental-health ER visit length
Mental health visits usually run longer (safety screening).
5 hr 41 min of 32 patients
Patients who left before being seen
Walked out before being seen, usually due to long waits.
2% of 73,078 visits
Head CT scan time for stroke
Time from arrival to head CT for suspected stroke. Faster is better.
1 hr 34 min of 17 patients
Compared to other US hospitals
Patient safety
Rates of infections, clots, falls and surgical complications during a stay.
Above average
Avoiding readmission
Patients returning within 30 days for the same condition.
Below average
Infection rates lower is better
Central-line bloodstream infections
Bloodstream infections from a central IV line. Known as CLABSI.
Better than average
0.00 1.00 = national avg
Catheter urinary-tract infections
UTIs from a urinary catheter. Known as CAUTI.
Better than average
0.16 1.00 = national avg
Colon surgery site infections
Wound infections after colon surgery.
- About average
0.63 1.00 = national avg
Hysterectomy site infections
Wound infections after abdominal hysterectomy.
- About average
0.62 1.00 = national avg
MRSA bloodstream infections
Drug-resistant staph in the bloodstream.
- About average
0.76 1.00 = national avg
C. diff (intestinal) infections
Gut infections, often after antibiotics.
Better than average
0.13 1.00 = national avg
What patients say
Overall HCAHPS rating
Hospital rating
60% rated 9 or 10 of 10
60%
Would recommend
60% would definitely recommend
60%
Nurse communication
74% said nurses always communicated well
74%
Doctor communication
74% said doctors always communicated well
74%
Cleanliness
60% said the room was always clean
60%
Quietness at night
44% said the area was always quiet at night
44%
Clinicians on staff
464
total clinicians
15
ER physicians
By specialty
Internal medicine 41
Cardiology 28
Anesthesiology 25
General surgery 24
Obstetrics / gynecology 22
Orthopedic surgery 19
Radiology 19
Pulmonology 10
Neurology 9
Hematology / oncology 9
Critical care 3
Interventional cardiology 1
Where this number comes from

Mount Sinai Health System publishes this wait time on its website, mychart.mountsinai.org . We check it about every 30 minutes and show you the most recent number.

  • What it means: How long someone arriving right now would likely wait to see a doctor.
  • Last updated: 2:23am on 11 Jun 2026 (hospital local time)
Frequently asked questions
How long is the wait at Mount Sinai South Nassau?

The most recently published wait at Mount Sinai South Nassau is 77 minutes, as of 2:23am hospital local time. The all-time average for this ER is around 28 minutes. Wait times change quickly , call the ER to confirm before you travel.

Should I go to the ER or to urgent care?

For life-threatening symptoms , chest pain, stroke signs (face drooping, arm weakness, speech difficulty), severe bleeding, breathing difficulty, or loss of consciousness , call 911 and head to the ER. For minor injuries, fevers, low-grade illness, or anything non-emergency, urgent care is usually faster and cheaper. See urgent care in New York.

Is Mount Sinai South Nassau open 24 hours?

Most Medicare-certified ERs in the US run 24 hours a day, seven days a week. To confirm the current status of Mount Sinai South Nassau, call (516) 632-3000.

Where is Mount Sinai South Nassau located?

Mount Sinai South Nassau is located at One Healthy Way, Oceanside, NY, 11572. Phone: (516) 632-3000.