Mercy Hospital South St. Louis

Mercy Hospital South has been a healing presence in the South St. Louis County area for more than 140 years. Today, we continue providing compassionate medical and specialty care on our South County campus, just west of I-270 on Tesson Ferry Road. We care for patients from St. Louis City and St. Louis County, as well as Jefferson, Franklin, Saint Francois and Sainte Genevieve counties in Missouri; and Monroe, Randolph and St. Clair counties in Illinois. Mercy Hospital South provides all-private rooms and nationally recognized care including:

Mercy patients have access to MyMercy – a free app that lets you manage your health and connect with your care team from your computer, tablet device or smartphone at any time. Mercy patients may also participate in national clinical trials through Mercy Research. 

Featured Hospital Services in St. Louis

At Mercy Hospital South, you have an entire care team bringing a wealth of expertise to you on one campus. Specialty hospital services include acute rehabilitation, cardiology, maternity services, oncology care, orthopedics, neurology/stroke, surgery and emergency medicine.

Women's Health Care & Maternity Services

For every stage of health and life—pregnancy, labor, delivery and beyond—Mercy Hospital South provides the care women need. Our St. Louis County hospital offers:  

• Mercy Birthplace, a warm, comfortable environment where moms-to-be stay in one room through labor, delivery and recovery
• A Level II NICU with specialists in maternal-fetal health, emergency medicine and neonatal care
• Care for high-risk pregnancies at our Maternal and Fetal Health Center

Beyond childbirth, we offer a full range of women’s health care services, from routine checkups and mammograms to menopause care and surgical procedures.

Emergency & Trauma Care

Mercy Hospital South’s Emergency Department is staffed and equipped to handle emergencies of any level of severity and is the only Level II Trauma Center in South County.

Mercy Kids ER at Mercy Hospital South

Children receive expert, compassionate care for unexpected illnesses and injuries at Mercy South children’s ER. Staffed by a Mercy Kids pediatrician and pediatric trained nurses, our children’s emergency room features a separate waiting and triage area and six treatment rooms with child-friendly décor.

Heart Care

Mercy Hospital South was one of the first hospitals certified by the state of Missouri as a Level One STEMI (ST-Elevation Myocardial Infarction) Center, the highest level of cardiac care available. In addition to the Joint Commission’s Gold Seal of Approval® for Advanced Certification in Heart Failure, Mercy Hospital South has been awarded American Heart Association’s Get With The Guidelines-Heart Failure Gold Plus Quality Achievement Award. 

Stroke Care

Every minute matters when it comes to stroke. Mercy Hospital South provides 24/7 access to life-saving neurological care, with the expertise and technological resources to quickly diagnose and treat any type of stroke within one hour of arrival. Our South County hospital is one of less than 200 centers that has earned the Comprehensive Stroke Center Certification from The Joint Commission.