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Shannon Courtney O'Connor, M.D.

Shannon Courtney O'Connor, M.D.

Headshot of Shannon Courtney O'Connor

Specializes in: Adults (18+ years)



Bone Marrow Failure, Breast Cancer, Cancer Genetics, Chemotherapy, Gynecologic Cancers, Hematology, Kidney Cancer, Medical Oncology, Melanoma, Oncology, Women's Health more


Maryland Oncology Hematology

Appointment Phone: 301-929-0765
6420 Rockledge Drive
Suite 4200
Bethesda, MD 20817-7847 map


Shannon C. O'Connor, M.D., is a medical oncologist with Suburban Hospital. Dr. O'Connor is board certified in hematology, medical oncology and internal medicine by the American Board of Internal Medicine. She practices out of Maryland Oncology Hematology. 

Dr. O'Connor has expertise in hematology and medical oncology with a special focus in women's health, including breast cancer and gynecologic cancers. She is also completing her certification in genetics.

Dr. O'Connor earned her Master's Degree in Physiology at Georgetown University, followed by her medical degree from St. George's University School of Medicine. She completed a residency at Washington Hospital Center, as well as a fellowship in hematology and oncology. 

Dr. O'Connor is a member of the American Society of Clinical Oncology, the American Society of Hematology, the Montgomery County Medical Society and the American Medical Association. more

Departments / Divisions

  • Medicine at Suburban Hospital



  • MD; General Internal Medicine; St George's University School of Medicine (2005)


  • Medstar Washington Hospital Center (2008)


  • Hematology and Oncology; Medstar Washington Hospital Center (2011)

Board Certifications

  • American Board of Internal Medicine (Hematology) (2012)
  • American Board of Internal Medicine (Medical Oncology) (2011)

Research & Publications

Selected Publications

Catlett JP1, Williams SA, O'Connor SC, Krishnan J, Malkovska V. "Primary lymphoma of bone: an institutional experience." Leuk Lymphoma. 2008 Nov;49(11):2125-32. doi: 10.1080/10428190802404030.

Activities & Honors


  • American Society of Clinical Oncology


  • American Society of Hematology


  • Montgomery County Medical Society


  • American Medical Association


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