Mary Louise Keohan, MD

Mary Louise Keohan, MD

I am a medical oncologist who cares for adults with a very rare cancer known as soft tissue sarcoma. These tumors are notoriously difficult to treat because they begin in the connective tissues — such as fat, muscles, nerves, tendons, and blood and lymph vessels — that surround and support other parts of the body.

My fellow medical oncologists and I work alongside a broader disease management team that includes pathologists, surgeons, and radiation oncologists. Together, we create an individualized treatment plan for each patient, based on the need to preserve limb and organ function as best we can. Chemotherapy is often used as part of treatment, either before surgery to shrink a larger tumor or after surgery to kill any remaining cells that remain in the body. As a leader in the treatment of these complicated diseases, we also seek ways to refine and enhance therapy alternatives through various clinical research trials.

Appointments for New Patients
Clinical Expertise

Sarcomas of Soft Tissue and Bone; New Investigational Therapies; Gastrointestinal Cancers

Languages Spoken

MD, St. George’s University School of Medicine (Grenada, West Indies)


University of Medicine and Dentistry of New Jersey


Columbia University College of Physicians & Surgeons

Board Certifications

Internal Medicine; Medical Oncology