Mercy Oncology and Hematology - Clayton-Clarkson

Cancer Treatment Center
15945 Clayton Road, Suite 120
Ballwin, MO 63011

Phone: (636) 256-5000
Fax: (636) 256-5044
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Services are provided by Mercy Hospital St. Louis Learn more »

Mercy Oncology & Hematology in Ballwin, MO is known for expertise and compassion. Our oncologists are experienced in treating many different types of cancer, as well as benign breast disease. Using the latest technology, our experts guide and support patients and families through diagnosis, treatment and survivorship.

We offer a “one-stop” healing experience that treats the whole person – body, mind and spirit. From surgery to chemotherapy to radiation to social services and integrative medicine, our team is here for you – any way you need us.

For more information on our oncology therapy program, please call to make an appointment, please call 314-251-6571 option 1.


We encourage our patients to participate in clinical trials to help themselves and future generations of patients with the same condition. For more information on clinical trials and research, please ask your doctor or call 314-251-7058 to find our more about clinical trials available at Mercy.

  • Research/Clinical Trials
  • Cancer and Tumor Research
  • Participate in a Research Study
Learn about Mercy's hair loss prevention options.

Scalp cooling can help prevent hair loss caused by chemotherapy drugs. Ask your provider about Paxman Cold Capping today - available at Mercy Breast Center - Clayton-Clarkson.

For more information call 636-256-5000


Meet Our Team

David C. Pratt Matching Gift Challenge

More technology. More hope. More reasons to give.

Please learn more about the David C. Pratt Cancer Center Challenge.