Hospital Directory USA
Acute care hospital Emergency room

Mount St. Mary's Hospital & Health Center in Lewiston, NY

Also known as Mount Saint Mary's Hospital

Directions (716) 297-4800 chsbuffalo.org

In a medical emergency, call 911. This page is for information only.

Overview

About Mount St. Mary's Hospital & Health Center

Mount St. Mary's Hospital & Health Center is an acute care hospital in Lewiston, Niagara County, New York. It reports its ownership to Medicare as nonprofit (private). It provides emergency services. Its CMS Overall Hospital Quality Star Rating is 2 out of 5. It has 175 licensed beds, according to state license data via HIFLD. The nearest other listed hospital is Niagara Falls Memorial Medical Center, about 4.3 mi away.

CMS Care Compare

Quality ratings

2
Overall Hospital Quality Star Rating, out of 5

How this hospital compares with the national rate on each measure group:

Mortality
5 no different
Deaths within 30 days for conditions such as heart attack, heart failure, pneumonia and stroke.
Safety of care
1 better · 1 no different
Infections and complications acquired in the hospital.
Readmission
4 no different · 2 worse
Unplanned returns to the hospital after discharge.

Source: Centers for Medicare & Medicaid Services, Hospital General Information. How star ratings work.

Emergency department

Emergency room times

156 min
Median time in the ER before leaving (OP-18b)
1.0%
Left before being seen (OP-22)
high
Emergency department volume

Lower times are better. Reporting period ending September 2025. Source: CMS Timely and Effective Care. What these numbers mean.

Safety of care

Infections and sepsis care

  • MRSA bloodstream infectionsNo different · SIR 0.00
  • Clostridioides difficile (C. diff) infectionsBetter than national · SIR 0.12

40% 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.

HCAHPS survey

What patients say

  • Patient survey star rating
  • Would definitely recommend70%
  • Rated the hospital 9 or 1068%
  • Completed surveys425

Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.

Map

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43.15415, -79.03243

Within 25 miles

Nearby hospitals

Frequently asked questions

Where is Mount St. Mary's Hospital & Health Center located?

Mount St. Mary's Hospital & Health Center is at 5300 Military Road, Lewiston, NY 14092 in Niagara County.

Does Mount St. Mary's Hospital & Health Center have an emergency room?

Yes. Mount St. Mary's Hospital & Health Center reports emergency services to Medicare, and patients spent a median of 156 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.

What is the CMS star rating of Mount St. Mary's Hospital & Health Center?

Mount St. Mary's Hospital & Health Center has a CMS Overall Hospital Quality Star Rating of 2 out of 5. The rating combines measures of mortality, safety of care, readmission, patient experience and timely and effective care, compared with hospitals nationwide.

Is Mount St. Mary's Hospital & Health Center a trauma center?

We have no trauma center designation on record for Mount St. Mary's Hospital & Health Center. Hospitals without one still treat injuries in their emergency department and transfer patients who need a trauma center. Check the New York trauma program for the current list.

What is the phone number of Mount St. Mary's Hospital & Health Center?

The main phone number on record with Medicare is (716) 297-4800.

Would patients recommend Mount St. Mary's Hospital & Health Center?

In the most recent HCAHPS patient survey (425 completed surveys), 70% of patients said they would definitely recommend the hospital, and 68% rated it 9 or 10 out of 10.

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