St Marys Hospital Superior in Superior, WI
Also known as Essentia Health St. Mary's Hospital-Superior, St. Mary's Hospital of Superior
In a medical emergency, call 911. This page is for information only.
About St Marys Hospital Superior
St Marys Hospital Superior is a critical access hospital in Superior, Douglas County, Wisconsin. It reports its ownership to Medicare as nonprofit (private). It provides emergency services. It is listed as a Level IV trauma center. It does not currently have a CMS Overall Star Rating, which usually means it reports too few measures to be rated. It has 25 licensed beds, according to state license data via HIFLD. The nearest other listed hospital is Essentia Health St Mary's Medical Center, about 6.5 mi away.
Quality ratings
How this hospital compares with the national rate on each measure group:
Source: Centers for Medicare & Medicaid Services, Hospital General Information. How star ratings work.
Emergency room times
Lower times are better. Reporting period ending September 2025. Source: CMS Timely and Effective Care. What these numbers mean.
Infections and sepsis care
- Clostridioides difficile (C. diff) infectionsNo different · SIR 0.50
60% of patients with severe sepsis or septic shock received all the recommended early care steps (SEP-1). Higher is better.
SIR is the standardized infection ratio: below 1 means fewer infections than predicted for a hospital like this one. Period ending September 2025. Source: CMS Healthcare-Associated Infections and Timely and Effective Care.
What patients say
- Patient survey star rating
- Would definitely recommend66%
- Rated the hospital 9 or 1060%
- Completed surveys113
Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.
Map
46.69774, -92.10400
Nearby hospitals
- Essentia Health St Mary's Medical Center402 East Second Street, Duluth, MN · Level I traumaAcute care hospital6.5 mi
- Essentia Health Duluth502 East Second Street, Duluth, MNAcute care hospital6.6 mi
- St Lukes Hospital915 East 1st Street, Duluth, MN · Level II traumaAcute care hospital6.9 mi
- Community Memorial Hospital512 Skyline Boulevard, Cloquet, MN · Level IV traumaCritical access hospital17 mi
Frequently asked questions
Where is St Marys Hospital Superior located?
St Marys Hospital Superior is at 3500 Tower Ave, Superior, WI 54880 in Douglas County.
Does St Marys Hospital Superior have an emergency room?
Yes. St Marys Hospital Superior reports emergency services to Medicare, and patients spent a median of 124 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.
What is the CMS star rating of St Marys Hospital Superior?
St Marys Hospital Superior does not have a current CMS Overall Star Rating. CMS only rates hospitals that report enough measures; critical access, psychiatric, VA and many small hospitals are often unrated, which says nothing about their quality.
Is St Marys Hospital Superior a trauma center?
Yes. It is listed as a Level IV trauma center in the HIFLD hospitals data, which is compiled from state trauma registries (source date April 2024). Trauma designations are renewed periodically, so confirm with the Wisconsin EMS or trauma program. In an emergency, call 911: paramedics take seriously injured patients to the right trauma center.
What is the phone number of St Marys Hospital Superior?
The main phone number on record with Medicare is (715) 817-7000.
Would patients recommend St Marys Hospital Superior?
In the most recent HCAHPS patient survey (113 completed surveys), 66% of patients said they would definitely recommend the hospital, and 60% rated it 9 or 10 out of 10.
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