What is the emergency room wait time at CHI St Alexius Health Williston?

Patients spend a median of 156 minutes (2 hours 36 minutes) in the emergency department at CHI St Alexius Health Williston, according to CMS. This is a median over a past 12-month reporting period, not a live figure.

Does CHI St Alexius Health Williston have an emergency room?

CHI St Alexius Health Williston provides emergency services.

What is the CMS star rating for CHI St Alexius Health Williston?

CHI St Alexius Health Williston has an overall rating of 3 out of 5 stars from the Centers for Medicare and Medicaid Services.

Where is CHI St Alexius Health Williston located?

CHI St Alexius Health Williston is at 1301 15th Ave W, Williston, ND 58801.

What is the phone number for CHI St Alexius Health Williston?

The phone number for CHI St Alexius Health Williston is (701) 774-7400.

CHI St Alexius Health WillistonWilliston, ND

Formerly Mercy Medical Center

See all hospitals in Williston, ND, or find the nearest hospital to you.

(701) 774-7400 Visit Website

Critical Access Hospitals

Time ZoneCST
CountyWilliams
Emergency CapableYes
FIPS38105
Area Code701

Quality and performance

Centers for Medicare & Medicaid Services · data as of July 2026

Patients spend an average of 2 hours 36 minutes in the emergency department at CHI St Alexius Health Williston. That is 39 minutes longer than the North Dakota average of 1 hour 57 minutes.

CMS rating ★★★★★ 3/5

Left before seen 3%

ER volume low

Type Critical access

Ownership Non-profit

Maternity Birthing-friendly

Source: CMS Hospital General Information and Timely & Effective Care. Wait times are a median over a past 12-month reporting period, not live data. Not affiliated with CMS or with CHI St Alexius Health Williston. For a medical emergency, call 911.

Compare ER waits across North Dakota · How North Dakota hospitals rank on star ratings · Other Critical Access hospitals in North Dakota · How we source this data · Something wrong on this page? Tell us

Closest other hospitals

29 mi McKenzie County Healthcare Systems Watford City, ND 2 hr 10 min ER wait 37 mi Tioga Medical Center Tioga, ND 1 hr 22 min ER wait 39 mi Sidney Health Center Sidney, MT 2 hr 32 min ER wait 40 mi Roosevelt Memorial Medical Ctr Culbertson, MT No ER 40 mi Roosevelt Medical Center Culbertson, MT 1 hr 40 min ER wait

CHI St Alexius Health Williston Address 1301 15th Ave W
Williston, ND 58801

The information listed on this page will help you determine if CHI St Alexius Health Williston is the nearest hospital to your location. Address, phone number, emergency department status, bed count and CMS quality measures for CHI St Alexius Health Williston are listed above.