Skip Navigation

Phone Service Update

We are experiencing extremely high call volume related to COVID-19 vaccine interest. Please understand that our phone lines must be clear for urgent medical care needs. We are unable to accept phone calls to schedule COVID-19 vaccinations at this time. When this changes, we will update this web site. Please know that our vaccine supply is extremely small. Read all COVID-19 Vaccine Information.

Patient Care Options | Visitor Guidelines | Coronavirus Information | Self-Checker | Get Email Alerts

Find a Doctor

Find a Researcher


Shannon Courtney O'Connor, M.D.

Photo of Dr. Shannon Courtney O'Connor, M.D.

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


Associates In Oncology Hematology

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


  • Medstar Washington Hospital Center / Hematology and Oncology (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


Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

  • ...Loading ratings...
  • ... 
  • ... 
  • ... 
  • ... 
  • ... 


Is this you? Edit Profile
back to top button