Mercy Hospital South Wait times (Emergency)
St. Louis, Missouri · ER
Page last updated
Official / estimated
Estimated wait to first assessment
Typical range 30 min – 2h 30m
This hospital doesn't publish a live ER wait. Based on the typical wait to first assessment recorded for this hospital.
Typical wait times at Mercy Hospital South
- Time to first assessment (triage / provider)
- 30 min – 2h 30m
Typical ranges based on community reports and historical patterns. Actual waits vary with patient volume and how urgent each case is.
About Mercy Hospital South
The Average Wait Time at the Mercy Hospital South Sappington ER Wait Times, from the Emergency Department to Hospital Admission after the assessment.
Mercy Hospital Wait Times (All Locations)
Average Wait time for the First Assessment with a doctor in an Emergency is:
30 minutes to 2.5 Hours
0 hours and 50 minutes.
Mercy Hospital South Emergency Department is located in St. Louis, Missouri, offering 24/7 emergency care with specialized services. The facility is part of the Mercy network and is known for its comprehensive medical support, including advanced heart, stroke, and trauma care.
For urgent needs, patients can visit the Emergency Department at 10010 Kennerly Road, St. Louis, MO 63128. The hospital is equipped with a skilled team of emergency professionals and state-of-the-art medical equipment to handle a variety of critical conditions. If you need immediate assistance, you can contact them at (314) 525-1000
There will be a separate waiting time in the Emergency Department on the patient’s bed after the first assessment by a doctor or Nurse.
Recent wait reports submitted by visitors
What people who waited here actually experienced, newest first.
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Reported by visitors
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Best time to visit the ER at Mercy Hospital South
Not enough history yet to call a best time.
This pattern is built from the waits we record at Mercy Hospital South around the clock. It appears once every hour of the day has several readings behind it, rather than guessing from a thin sample.
In the meantime: across US emergency departments, evenings between about 6 PM and midnight are typically the busiest, and early mornings are usually quietest. Monday is often the heaviest weekday.
Mercy Hospital South wait time graph
No wait history for this hospital yet.
We chart the last 24 hours of published waits here, alongside any wait times visitors report. There aren't enough readings for Mercy Hospital South to draw a line yet.
Waited here recently? Submitting your wait above is the fastest way to get this graph started.
Location & emergency contacts
St. Louis, MO
- 988988 Suicide & Crisis LifelineCall or text, 24/7, anywhere in the US
- 1-800-222-1222Poison ControlPoisoning, overdose or medication emergencies, 24/7
Not sure you need the ER? Call the 24/7 nurse advice line on the back of your insurance card.
Nearby ERs outside St. Louis
The closest emergency departments in neighboring communities — worth the drive when the local wait is long. Distances are straight-line, so allow more for real roads.
| Hospital | Distance | Wait | Source | Updated |
|---|---|---|---|---|
| Mercy hospital lincoln | 36 mi | 20 min | Typical | — |
| Mercy Hospital Washington, MOMercy Hospital Washington | 31 mi | 25 min | Typical | — |
| Mercy Hospital JeffersonFestus | 31 mi | 1h 15m | Typical | — |
| Mercy Hospital St. Louis | 0.0 mi | 2h | Typical | — |
Tips for visiting the ER in St. Louis
Call 911 instead if it's severe
Chest pain, trouble breathing, stroke signs, heavy bleeding, or a serious injury — call 911 rather than driving. Paramedics start treatment on the way and you are assessed on arrival instead of joining the queue.
Bring your insurance card, ID and a medication list
Bring your health insurance card, photo ID, and a written list of your medications, doses and allergies. Federal law (EMTALA) means an emergency department must screen and stabilize you whether or not you have insurance — never skip care over coverage.
Expect to be seen by severity, not arrival
Triage means the sickest patient goes first, so the posted wait is an estimate for an average patient. Tell the triage nurse immediately if your symptoms change or get worse while you are waiting — that can change your priority.
Check the wait before you leave, and compare other St. Louis options
Waits move by the hour. Refresh this page just before you set off, and compare against the other departments listed further down — a longer drive can still mean a shorter total time.
Call a nurse line first if you're unsure
Most health insurers and hospital systems run a free 24/7 nurse advice line — the number is usually on the back of your insurance card. A nurse can tell you whether an emergency visit is warranted, or whether urgent care, telehealth or waiting until morning is safe.
Bring someone, and something to do
Emergency departments run 24/7 and waits of several hours are common. Bring a phone charger, water, any regular medication you take, and if you can, someone who can speak for you and drive you home.
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Frequently asked questions
- What is the current ER wait time at Mercy Hospital South?
- Mercy Hospital South does not publish a live emergency wait time. WaitUpdates.com shows an estimate of about 1h 30m to first assessment (typically 30 min – 2h 30m) instead, based on the typical waits recorded for Mercy Hospital South. Treat it as a rough guide — call the hospital for anything time-sensitive.
- How many emergency departments are there in St. Louis?
- Mercy Hospital South is the only hospital department WaitUpdates.com tracks in St. Louis. The nearest alternatives are in other communities — see the nearby emergency rooms listed on this page, with driving distances.
- Should I go to the emergency room with the shortest wait time?
- Not necessarily. US emergency departments triage by severity (most use the 5-level Emergency Severity Index), not arrival order, so a sicker patient arriving after you is seen first. A department showing a longer posted wait may still treat you sooner if your condition is urgent, and the posted figure is an estimate for average patients, not a promise. Use the shortest wait to choose between comparable options — never to decide whether to seek care at all.
- Where does WaitUpdates.com get Mercy Hospital South's wait times?
- Mercy Hospital South publishes no live figure, so the headline number is an estimate. Visitor reports on this page are shown separately and are never blended into the official number, because a handful of reports can be skewed easily.
- Is Mercy Hospital South open 24 hours?
- Hospital emergency departments in Missouri, including Mercy Hospital South, are open 24 hours a day, every day of the year, including holidays. Urgent care and walk-in clinics keep shorter hours, so check before traveling to one of those instead.
- What should I do if the wait in St. Louis is long?
- This page lists the 4 nearest emergency departments outside St. Louis with their current waits and distance, so you can weigh a drive against a wait. You can also call the 24/7 nurse advice line on the back of your insurance card to speak with a registered nurse about where to go. For something non-urgent, an urgent care center, a telehealth visit or a pharmacist can often help with far less wait. If symptoms are severe or worsening, call 911 — long waits are never a reason to avoid emergency care.
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⚠️ Wait times shown are estimates based on community reports and historical patterns, and are not endorsed by the hospital. Actual waits vary with patient volume and case severity. In an emergency, call 911.