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Mount St. Mary's Hospital

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Emergency Care: 24 hours a day, 7 days a week

Blood Testing: Monday - Friday: 6 a.m. to 5 p.m., Saturday: 7 a.m. to 1 p.m., Appointments: Monday - Friday: 8 a.m. to 5 p.m.

Bone Densitometry / DEXA, Digital Mammography: Monday - Friday 7:30 a.m. to 5:30 p.m. Walk-ins accepted. Evenings & Saturdays by appointment.

CT Scanning: Monday - Friday: 7:30 a.m. to 5 p.m., Saturday: 8 a.m. to 3 p.m. Walk-ins accepted.

Nuclear Medicine: Monday - Friday: 7 a.m. to 3 p.m.

Ultrasound: Monday - Friday: 7:30 a.m. to 7:30 p.m., Saturday: 8 a.m. to 12 p.m. Walk-ins accepted.

X-Ray: Monday - Friday: 7:30 a.m. to 5 p.m., Saturday: 8 a.m. to 3 p.m. Walk-ins accepted.

MRI: Monday - Friday: 7 a.m. to 4:30 p.m., Saturday: 7:30 a.m. to 2:30 p.m. Walk-ins accepted.

Physical Therapy: Monday - Thursday: 7 a.m. to 6 p.m., Friday: 7 a.m. to 3 p.m.


5300 Military Road
Lewiston, NY 14092


Main: (716) 297-4800
Phone Directory


Center for Women at Mount St. Mary's Hospital
Mount St. Mary's Cardiac Center
Mount St. Mary's Orthopedics
Mount St. Mary's Primary Care
Mount St. Mary's Primary Care Samuel Sirianni, MD
Mount St. Mary's Surgical Services


Addiction Management
Ambulatory Holter Monitor
Blood Testing
Bone Densitometry
Breast Cancer Surgery
Breastfeeding Support
Cardiac Interventional Procedures
Cardiac Outpatient Rehabilitation
Cardiac Surgery
CT Scan
EEG (Electroencephalogram)
EKG (Electrocardiogram)
Emergency Medicine
Gynecologic Cancer
Gynecological Surgery
Hand Therapy
Head and Neck Cancer
Interventional Radiology
Joint Replacement & Orthopedic Surgery
Labor & Delivery
Nuclear Medicine
Nutrition Counseling
Occupational Therapy
Palliative Care
Physical Therapy
Physical Therapy for Back Pain
Physical Therapy for Pelvic Pain and Incontinence
Physical Therapy for Pregnancy & Postpartum Discomfort
Pulmonary Medicine
Speech Therapy
Spine Surgery
Spiritual Care
Stress Echocardiogram
Stress Test
Vascular Surgery
Vestibular & Balance Therapy
Wound Care

Over 100 Years of Service

Mount St. Mary's Hospital is located in Lewiston, New York, providing quality care to the greater Niagara Falls region for over 100 years. Founded in 1907, this hospital has since been acknowledged for its superior care in maternity services and stroke treatments.

Mount St. Mary's Hospital is also accredited by the Joint Commission, illustrating that we meet the highest quality and safety standards in our field.

Reception/Waiting Area
Center for Women Hallway

Smoke-Free Campus

Please note that smoking is not permitted anywhere on Mount St. Mary's Hospital property or its off-site locations. This smoke-free policy includes all buildings, parking areas, cars parked on hospital property, grounds and adjacent sidewalks.

From the time I stepped into the emergency room, I had nothing but the best care. The nurses were respectful and had great bedside manor, they were very thorough with my whole treatment. I was then sent to a floor where I had the best nurses. They answered my questions day in and out. Doctors would come and talk to me and made it so I could understand what was going on. I was there for 5 days and every nurse I had was great and I thank everyone of them for taking such great care of me!

– Steph Alnuaimi