See schedule OAS a proud member of medstar health, medstar montgomery medical center's (medstar montgomery) mission is to enhance our community's health and well-being by offering high quality, compassionate and personalized care. Medstar montgomery is located in olney, in northeastern montgomery county, maryland, a suburb of washington, d.c. As montgomery county's first acute care hospital, medstar montgomery has been serving the greater olney community for more than 100 years. In fiscal year 2023, medstar montgomery had 5,777 inpatient admissions and 64,634 outpatient visits including 32,772 emergency visits.