Live Updated 4 hr ago
54min
average wait
39 min longer than usual
17 min
avg today
15 min
avg overall
59 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.
Last reading is older than 30 minutes. Feed may be down.
Source: MarinHealth · 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, 7 PM
avg. of 1 reading
54 min rising
Today, 6 PM
avg. of 2 readings
40 min rising
Today, 5 PM
avg. of 2 readings
12 min falling
Today, 4 PM
avg. of 2 readings
14 min rising
Today, 3 PM
avg. of 2 readings
0 min falling
Today, 2 PM
avg. of 2 readings
2 min falling
Today, 1 PM
avg. of 2 readings
10 min steady
Today, 12 PM
avg. of 2 readings
10 min rising
Today, 11 AM
avg. of 2 readings
6 min steady
Today, 10 AM
avg. of 2 readings
7 min steady
Today, 9 AM
avg. of 2 readings
6 min falling
Today, 8 AM
avg. of 2 readings
22 min rising
Today, 7 AM
avg. of 2 readings
0 min steady
Today, 6 AM
avg. of 1 reading
0 min falling
Today, 5 AM
avg. of 2 readings
41 min rising
Today, 4 AM
avg. of 1 reading
2 min falling
Today, 3 AM
avg. of 2 readings
38 min rising
Today, 2 AM
avg. of 2 readings
26 min falling
Today, 1 AM
avg. of 1 reading
45 min -
Visit Marin County
Address
250 BON AIR ROAD
Greenbrae, CA 94904
Phone
Government - Hospital District or Authority
HoursOpen 24/7 Websitemymarinhealth.org
Facilities & services
325
total beds
17
operating rooms
General acute care
facility type
Other services
Renal dialysisPsychiatric unit
Accessibility & amenities
Wheelchair-accessible entrance Wheelchair-accessible parking Wheelchair-accessible restroom Public restrooms Free parking lot Free street parking Paid parking lot Apple Pay / Google Pay Requires appointments Recommends appointment
ER performance
Typical ER visit length
Median time from arrival to leaving.
3 hr 1 min of 447 patients
Mental-health ER visit length
Mental health visits usually run longer (safety screening).
5 hr 15 min of 20 patients
Patients who left before being seen
Walked out before being seen, usually due to long waits.
1% of 44,933 visits
Head CT scan time for stroke
Time from arrival to head CT for suspected stroke. Faster is better.
1 hr 40 min of 15 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.
Above average
Infection rates lower is better
Central-line bloodstream infections
Bloodstream infections from a central IV line. Known as CLABSI.
- About average
0.97 1.00 = national avg
Catheter urinary-tract infections
UTIs from a urinary catheter. Known as CAUTI.
- About average
0.56 1.00 = national avg
Colon surgery site infections
Wound infections after colon surgery.
- About average
0.93 1.00 = national avg
MRSA bloodstream infections
Drug-resistant staph in the bloodstream.
- About average
0.00 1.00 = national avg
C. diff (intestinal) infections
Gut infections, often after antibiotics.
Better than average
0.33 1.00 = national avg
What patients say
Overall HCAHPS rating
Hospital rating
74% rated 9 or 10 of 10
74%
Would recommend
74% would definitely recommend
74%
Nurse communication
73% said nurses always communicated well
73%
Doctor communication
74% said doctors always communicated well
74%
Cleanliness
70% said the room was always clean
70%
Quietness at night
50% said the area was always quiet at night
50%
Clinicians on staff
648
total clinicians
35
ER physicians
By specialty
Internal medicine 84
Orthopedic surgery 37
Anesthesiology 35
Radiology 33
Obstetrics / gynecology 22
Cardiology 19
Neurology 13
General surgery 8
Pulmonology 7
Hematology / oncology 7
Critical care 4
Interventional cardiology 3
Where this number comes from

MarinHealth publishes this wait time on its website, mymarinhealth.org . We check it about every 30 minutes and show you the most recent number.

Looking on their site? The wait shows up as the text "Wait Time: <strong>54 Minutes</strong>" somewhere on the page , usually a small banner near the top, a sidebar, or a footer. It can take a moment to appear if the page loads it after.
  • What it means: The typical wait over the last few hours, averaged together. Your actual wait could be shorter or longer.
  • Last updated: 7:22pm on 10 Jun 2026 (hospital local time)
This reading hasn't refreshed in a while. The hospital's feed or our system may be temporarily down. Call the hospital to confirm before going.
Frequently asked questions
How long is the wait at Marinhealth Medical Center?

The most recently published wait at Marinhealth Medical Center is 54 minutes, as of 7:22pm hospital local time. The all-time average for this ER is around 15 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 California.

Is Marinhealth Medical Center 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 Marinhealth Medical Center, call (415) 925-7900.

Where is Marinhealth Medical Center located?

Marinhealth Medical Center is located at 250 Bon Air Road, Greenbrae, CA, 94904. Phone: (415) 925-7900.