Maureen O'Donnell-DeBritz, M.D.

Headshot of Maureen O'Donnell-DeBritz
  • Breast Surgery Clinical Associate


Breast Biopsy, Breast Cancer, Breast Conservation Surgery, Breast Disease, Breast Health, Breast Surgery, Cancer Genetics, Hereditary Breast Cancer, Mastectomy, Nipple-Sparing Mastectomy, Oncoplastic Breast Conservation Surgery, Surgical Oncology more

Research Interests

Gene mutations that predispose to breast cancer; contralateral breast cancer risk more

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Insurance Information

Main Phone

Outside of Maryland & Washington D.C.

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Sibley Memorial Hospital

Appointment Phone: 202-243-5230
5255 Loughboro Road NW
Washington, DC 20016 map
Fax: 202-243-5221


Maureen O'Donnell, M.D., is a breast surgeon with the Sullivan Breast Center at Sibley Memorial Hospital and a clinical associate of the Johns Hopkins Department of Surgery-Breast Division. Dr. O'Donnell is a part of the Weekly Breast Tumor Conference at The Johns Hopkins Hospital.

Dr. O'Donnell has expertise in surgery of the breast, including surgical oncology techniques such as breast conserving surgery, nipple sparing and skin sparing mastectomy, and oncoplastic techniques. Dr. O'Donnell is also specialized in diagnosing and managing a wide spectrum of breast diseases, ranging from benign breast issues to breast cancer. She has a special interest in patients with a genetic predisposition to breast cancer.

Dr. O'Donnell earned her medical degree from the University of Illinois College of Medicine and completed a surgical residency at Georgetown University Medical Center. She then completed a fellowship in breast surgical oncology at Johns Hopkins Hospital. 

Dr. O'Donnell is a fellow of the American College of Surgeons, as well as a member of the John Carroll Society, where she previously chaired the Rose Mass Committee. She has participated in the Ride for Life Fundraiser and Sibley Memorial Hospital's Knowledge is Power: Breast Cancer seminars as well. Dr. O'Donnell was also an instructor for the Johns Hopkins Breast Disease Clinpath Conference. 

Dr. O'Donnell has earned the Hugh H. Hussey Excellence in Teaching Award from Georgetown University Medical Center, as well as the Resident "Pearl" Teaching Award and the Pfizer Pharmaceutical Travel Award. She has also received the Attending Teaching Award from Inova Fairfax Hospital.

Dr. O'Donnell's research interests include gene mutations that predispose to breast cancer, as well as contralateral breast cancer risk. She has contributed to publications, presentations and book chapters. more


  • Breast Surgery Clinical Associate

Departments / Divisions

  • Surgery
  • Surgery at Sibley Memorial Hospital



  • MD; University of Illinois College of Medicine (1997)


  • General Surgery; MedStar Georgetown University Medical Center (2002)


  • Breast Surgery; Johns Hopkins University School of Medicine (2016)

Board Certifications

  • American Board of Surgery (General Surgery) (2003)

Activities & Honors


  • Hugh H. Hussey Excellence in Teaching Award, Georgetown University Medical Center
  • Resident "Pearl" Teaching Award, Georgetown University Medical Center
  • Pharmaceutical Travel Award, Pfizer
  • Attending Teaching Award, Inova Fairfax Hospital


  • American College of Surgeons


  • John Carroll Rose Society


Videos & Media

Recent News Articles and Media Coverage

Breast density pegged as risk factor for contralateral cancer. M.D. Edge (03/17/2016)

Advances in Breast-Sparing Surgery for Cancer Patients Johns Hopkins Medicine (January 14, 2021)

Podcast: Kimmel in DC with Dr Ashwani Rajput - Breast Cancer Surgery (February 10, 2021

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.

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