Susan K. Seo, MD

About Me

I am a board-certified physician who specializes in the treatment of infections in patients whose immune systems are weakened due to cancer, cancer therapy, or infection with HIV. I’m also interested in educating trainees, allied healthcare professionals, and physicians about appropriate antibiotic selection and use through my work with Memorial Sloan Kettering’s Antibiotic Management Program (AMP). 

Plus and Minus IconIcon showing a plus/minus toggle, indicating that the surrounding element can be opened and closed.

The discovery of antibiotics in the early 20th century transformed medicine by giving us the tool to treat once-deadly infections. However, antibiotic-resistant bacteria are a growing problem, and improving how we prescribe antibiotics is important. As the founding Director of AMP, I work with two full-time clinical pharmacists and a data manager to optimize antibiotic use within MSK. The AMP team provides advice to prescribers on optimal selection, dose, and duration of antimicrobial therapy; educates healthcare professionals on rational antimicrobial use; and monitors antibiotic usage patterns to identify areas for improvement. We also develop and update evidence-based antimicrobial guidelines, which are an important resource for prescribers. Finally, the AMP works closely with other services and departments within MSK, such as infection control, clinical laboratory, pharmacy, information services, and various medical and surgical oncology services.  

My clinical research interests are related to antimicrobial stewardship and include examining stewardship methods to optimize antimicrobial use, the relationship between antimicrobial exposure and outcomes, and the interplay between microbiological testing and antimicrobial prescribing.

  • Clinical Expertise: Infectious Diseases; Immune Deficiencies
  • Languages Spoken: English
  • Education: MD, University of North Carolina at Chapel Hill School of Medicine
  • Residencies: Beth Israel Hospital/Harvard Medical School
  • Fellowships: Memorial Sloan Kettering Cancer Center
  • Board Certifications: Internal Medicine; Infectious Diseases

See My Colleagues


Visit PubMed for a full listing of Susan K. Seo’s journal articles

Pubmed is an online index of biomedical articles maintained by the U.S. National Library of Medicine and the National Institutes of Health.

Clinical Trials

As home to one of the world’s top cancer research centers, Memorial Sloan Kettering is typically involved in more than 900 clinical trials at a given time. Currently, clinical trials focused on the conditions I treat are enrolling new patients. If you’re interested in joining a clinical trial, click to learn about the trial’s purpose, eligibility criteria, and how to get more information.

Learn more Arrow rightAn icon showing an arrow pointing to the right.


Most major health insurers offer plans that include MSK as one of their in-network providers. If MSK is in-network, it means all our doctors are too. Medicaid and New York State Medicare also provide benefits for care at MSK.

Learn more Arrow rightAn icon showing an arrow pointing to the right.