5300 Military Rd.
Lewiston, NY 14092

24/7 Emergency Department
Visiting Hours: 9:00 a.m. - 9:00 p.m.

Service Hours

Emergency Department

Always Open

Blood Draw

Monday – Friday: 7:00 a.m. to 4:00 p.m.
Saturday: 7:00 a.m. to 12:00 p.m.
Sunday: 7:30 a.m. to 11:15 a.m.

CT Scanning

Monday – Friday: 7:30 a.m. to 5 p.m.
Saturday: 8:00 a.m. to 3:00 p.m.

MRI

Monday – Friday: 7:00 a.m. to 4:30 p.m.
Saturday: 7:30 a.m. to 2:30 p.m.

Digital Mammography

Monday – Friday 7:30 a.m. to 5:30 p.m.
Evenings & Saturdays by appointment.

Bone Densitometry / DEXA

Monday – Friday 7:30 a.m. to 5:30 p.m.
Evenings & Saturdays by appointment.

Physical Therapy

Monday – Thursday: 7:00 a.m. to 6:00 p.m.
Friday: 7:00 a.m. to 3:00 p.m.

Nuclear Medicine

Monday – Friday: 7:00 a.m. to 3:00 p.m.

Superior Services at Mount. St. Mary's Hospital

Mount St. Mary's hospital offers comprehensive healthcare services covering the full range of care. Our emergency department is always open for urgent needs, and we're proud to provide uniquely exceptional care in a number of different specialties.

View All Specialties

Stroke Care

Mount St. Mary’s Hospital serves the Niagara region as a New York State designated Stroke Center. As a part of the network of Stroke Centers of Catholic Health, we have a dedicated stroke care unit, state-of-the-art facilities, and inpatient rehabilitation.

» Stroke Care

Addiction Management

Mount St. Mary's Hospital provides inpatient treatment for alcohol and substance use disorders at the Clearview Treatment Center, a confidential program dedicated to holistic care for men and women.

» Addiction Management

Cardiac Care

Mount St. Mary's Cardiology Services offer patients a full range of diagnostic and treatment procedures. We also provide cardiac rehabilitation programs using a collaborative care model.

» Cardiac Care

Obstetric Care

Receive your prenatal and postpartum care at the Center for Women at Mount St. Mary's Hospital and when it comes to time to deliver your little one, you'll have access to the region's best labor and delivery services at Sisters of Charity Hospital.

» Obstetric Care

Patient & Visitor Information

Whether you’re coming in as a patient or visiting a loved one, we want you to have all the information you need to put your mind at ease. From where to park to how to order a meal, read up on our policies and suggestions for your stay!

Family visits patient in hospital

Mount St. Mary's Quick Facts

Our commitment to excellence and quality care is demonstrated through our awards, recognition, and care statistics.

175

beds

15,363

annual ER visits

Mount St. Mary's Events

November 19, 2025
  • RN Hiring Event! Mount St. Mary’s and Lockport Memorial Hospital

    November 19, 2025  9:00 am - 5:00 pm
    Mount St. Mary's Hospital, 5300 Military Rd, Lewiston, NY 14092, USA

    Mount St. Mary’s and Lockport Memorial Hospital serve the Greater Niagara County region by providing superior healthcare close to home. Specializing in emergency care, primary care, and addiction counseling, Mount St. Mary’s is a trusted community hospital with access to the region’s leading healthcare system in patient safety; while Lockport Memorial offeres emergency, medical inpatient, outpatient and diagnostic services as well asoffices for primary and specialty care practices.

    To join this amazing nursing team, join us for open interviews at Mount St. Mary Hospital today!

    Don't forget to ask about our sign on bonuses worth up to $25,000!

    See more details

Latest News & Resources

View All

» Moody’s Investor Services Ratings upgrades Catholic Health Rating to B2

Buffalo, NY— Catholic Health is pleased that Moody’s Investors Service has upgraded its rating from B3 to B2, reflecting the system’s...

» Read More

» Keeping Your Hands Safe from Scary Pumpkin Carving Accidents

The tradition of pumpkin carving has been around for centuries, with its origins dating back to 19th century Ireland. Jack-o-lanterns are...

» Read More

» When Old Injuries Come Back to Haunt You

Can the pain of old injuries and wounds come back to bother us later in life? A sprained knee you got in high school may not have been a...

» Read More

Request An Appointment

Fill out a quick form and a Catholic Health representative will call you to schedule an appointment.

Request an Appointment