See schedule OAS a proud member of medstar health, medstar southern maryland hospital center's (medstar southern maryland) mission is to uphold its commitment to the community by continuously promoting, maintaining, and improving health through education and service while assuring fiscal integrity. Medstar southern maryland is located in southern prince george's county, maryland. In fiscal year 2023, msmhc had 11,176 inpatient admissions, 75,688 outpatient visits, and 43,054 emergency visits.