HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / NY

MARK S ST MARIE, MD

GASTROENTEROLOGY

Graduated: 1976

Also: INTERNAL MEDICINE

Offers telehealth

NPI: 1629150792

Practice Locations (1)

GENERAL PHYSICIAN PC

111 N MAPLEMERE RD, SUITE 200

WILLIAMSVILLE, NY 142213182

7162044532

Source: CMS National Downloadable File, September 2026.

MARK ST MARIE, MD | HealthCareAtlasUSA