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Breast Health Center




Breast Health Center - Meet Our Team

"At Sibley, we have a team in place capable of providing the best in breast care, and we are leaders in all aspects of breast cancer diagnosis and treatment."

Colette M. Magnant, M.D.
Breast Surgeon
Director of the Sullivan Center's Breast Cancer Program

A Multidisciplinary Team Approach to Breast Health and Breast Cancer Treatment and Diagnosis

As a comprehensive breast center, the Sullivan Center at Sibley Memorial Hospital in Washington, DC is staffed by specialists from diverse disciplines who work closely together in the diagnosis, treatment and support of our patients. At regularly scheduled Breast Conferences, patient cases are discussed by breast radiologists, surgeons, medical oncologists, radiation oncologists, pathologists, pain medicine specialists, oncology nurses and others that make up the members of the breast conference team. Together, this group explores all possible treatment options in order to recommend the best breast treatment plan for the patient.

Breast Imagers

Contact Breast Imaging:
Renaissance Building, floor 4
Phone: 202-537-4545
Fax: 202-537-4505
Department Manager: 202-243-5238
Lead Technologist/ Imaging Navigator: 202-370-6592

Pouneh Razavi, M.D.

Medical School: Georgetown University School of Medicine
Residency: Georgetown University Hospital
Fellowship: Memorial Sloan Kettering Hospital
Board Certification: American Board of Radiology

Pouneh Razavi, M.D. is director of breast imaging. Dr. Razavi is a board-certified, dedicated breast imager with special interest in breast MRI. She held a position as attending physician, breast imager at Georgetown University Hospital for several years and joined Sibley's Sullivan Breast Center in April 2008.

Dr. Razavi is currently a member of the Medical Advisory Committee for Project WISH (Women In To Staying Healthy), Society of Breast Imaging, Radiological Society of North America, American Roentgen Ray Society and The American Medical Association. Dr. Razavi was the recipient of the 2004 RSNA Roentgen Resident/Fellow Research Award, presented in recognition of outstanding radiological research. She has also published articles and was an invited speaker at the Armed Forces Institute of Pathology (AFIP) Radiologic Pathology Course; Prince William Hospital, Grand rounds, Utility of Breast MRI; Prince William Hospital, Breast Cancer Symposium, Screening for Breast Cancer; and at the Sibley Memorial Hospital Breast Health: Knowledge is Power seminar in 2008 and 2012.

Sandra H. Joo, M.D.

Medical School: University of Florida College of Medicine
Residency: Radiology, New York University
Fellowship: Breast and Body Imaging, Memorial Sloan Kettering Cancer Center
Board Certification: American Board of Radiology

Sandra H. Joo, M.D., is a dedicated breast radiologist in the Sullivan Breast Center. Dr. Joo comes from the Memorial Sloan Kettering Cancer Center (MSKCC) in New York City where she was an attending physician for eight years. Dr. Joo brings extensive experience in all aspects of breast imaging and intervention including minimally invasive breast biopsies and breast MRI.  In addition to her clinical duties at MSKCC, Dr. Joo has trained medical students, radiology residents, breast imaging fellows as well as visiting physicians how to read breast MRIs as well as to perform MRI guided breast biopsies and localizations.  She also held a faculty appointment as an assistant professor of radiology at the Weil Medical College of Cornell University. She has expertise in all aspects of breast imaging and intervention and has published in the field of breast imaging. She received her bachelor of science in biology from Emory University in Atlanta, GA, graduating summa cum laude with highest honors in biology.  

David Schlesinger, M.D.

Medical School: University of Buffalo School of Medicine
Residency: University of Texas Health Science Center San Antonio
Fellowship: Harvard Medical School-The Brigham and Women's Hospital
Board Certification: American Board of Radiology

Dr. Schlesinger is a board-certified, dedicated breast radiologist specializing in the screening and diagnosis of breast cancer.  He has a special interest in 3D mammography (tomosynthesis) and brings proficiency in all aspects of breast imaging and interventional procedures, including minimally invasive, image-guided biopsies. Dr. Schlesinger was clinical assistant professor of radiology at The University of South Dakota School of Medicine. He has trained medical students, diagnostic radiology residents and fellows during his career. He has lectured at medical conferences and has also been featured on statewide television and radio broadcasts as an expert on breast cancer screening and 3D mammograms. Dr. Schlesinger is a member of the Society of Breast Imaging, American College of Radiology, Radiological Society of North America and American Roentgen Ray Society.

Breast Surgeons

Contact Breast Surgery:
Renaissance Building, floor 4
Phone: 202-243-5230
Fax: 202-243-5221

Colette M. Magnant, M.D., FACS

Medical Degree: Medical College of Virginia
Internship: General Surgery, Indiana University Medical Center
Residency: General Surgery, Georgetown University Medical Center"
Board Certification: National Board of Medical Examiners, American Board of Surgery, American College of Surgeons

Dr. Magnant, Director of Sibley’s Breast Cancer Program, has had 22 years of surgical experience, with 17 dedicated exclusively to breast surgery. Dr. Magnant performs services to ensure compliance with standards of the Joint Commission, serves on medical staff committees, provides administrative leadership, and evaluates and makes recommendations for the continued improvement of Sibley’s multi-disciplinary approach in the diagnosis, care and treatment of breast disease. She has held several academic appointments including Associate Professor of Surgery and Director of Trauma Services at Georgetown University Medical Center.

Bonnie Sun, M.D.

Medical Degree: Penn State University School of Medicine
Residency: University of Southern California, General Surgery
Fellowship: University of Southern California, Breast Surgery
Board Certification:  American Board of Surgery

Dr. Sun is a fellowship-trained and board-certified breast surgeon specializing in breast cancer. As a faculty member of the Johns Hopkins School of Medicine, Dr. Sun is part of a highly specialized multidisciplinary team, emphasizing on compassionate care and personalized medicine. She is dedicated to providing the highest levels of surgical techniques, including nipple and skin sparing mastectomy, breast conservation with oncoplastic techniques and minimally invasive breast surgery. Her research focuses on surgical treatment that improves long-term outcome and quality of life. Dr. Sun’s research is focused on clinical advancements in the practice of breast oncologic surgery. Ongoing projects include those evaluating clinical outcomes and measures of postoperative quality of life. She is working on multi-institutional research programs in oncoplastic surgery with goals to achieve better oncologic and functional outcome. She has published multiple scientific papers in national peer-reviewed journals and presented at national meetings. She graduated from Johns Hopkins University with top honors and received her medical degree at Penn State University School of Medicine. She was also elected to the Phi Beta Kappa honors society, Golden Key honor society and Pathology honor society. She is a member of American College of Surgeons, Society of Surgical Oncology, American Society of Breast Surgeons, Association of Women Surgeons and American Society of Clinical Oncology.

Meredith Garrett, M.D.

Medical Degree: Vanderbilt University School of Medicine
Residency: Walter Reed Army Medical Center
Board Certification: American Board of Surgery, American Society of Breast Surgeons

Dr. Garrett is a board-certified surgeon specializing in breast surgery, breast ultrasound, minimally invasive breast biopsy, breast surgery and sentinel lymph node biopsy for melanoma and breast cancer. She also does advanced laparoscopic cases and she has a special interest in the emerging field of robotics as applied to general surgery. Dr. Garrett is a member of The Society of American Gastrointestinal Endoscopic Surgeons, The American Society of Breast Surgeons, The D.C. Medical Society, as well as other medical organizations. She also serves as a Surgical Consultant to the U.S. State Department.

Medical Oncologists

Contact Medical Oncology and Infusion:
Renaissance Building, floor 3 
Phone: 202-660-6500

Karen Lisa Smith, M.D., M.P.H.

Medical Degree: Rush Medical College
Residency: Hospital of the University of Pennsylvania
Fellowship: Memorial Sloan-Kettering Cancer Center
Board Certification: American Board of Internal Medicine

Dr. Smith is board-certified in medical oncology and is an assistant professor at  Johns Hopkins University. She was previously an assistant professor of hematology at Georgetown University Hospital at Washington Hospital Center where she was chair of the Cancer Committee and is now a member of the Johns Hopkins Breast Cancer Program. Dr. Smith has published numerous peer reviewed journals and authored book chapters. She is the recipient of numerous grants to further breast cancer research and was awarded the American Society of Clinical Oncology (ASCO) Foundation Young Investigator Award in 2005 and the ASCO Foundation Merit Award in both 2005 and 2006.  Dr. Smith devotes her clinical practice exclusively to caring for breast cancer patients and has a particular focus on the unique issues faced by young breast cancer patients and on survivorship care. 

Bruce Kressel, M.D., FACP

Medical Degree: Tufts University School of Medicine
Residency: George Washington University Hospital
Fellowship: George Washington University Hospital, Georgetown University Medical Center/The Lombardi Cancer Center  
Board Certification: American Board of Internal Medicine

Dr. Kressel has over 30 years of experience in clinical oncology and hematology in the metropolitan Washington, D.C. area. His experience is in general medical oncology with a special interest in hematologic malignancies including lymphoma, leukemia, myeloma and gynecological oncology.  He currently holds an appointment at the Johns Hopkins University School of Medicine. 


Frederick P. Smith, M.D.

Medical Degree: St. Louis University Medical School
Residency: Georgetown University Medical Center
Fellowship: Georgetown University Medical Center/The Lombardi Cancer Center
Board Certification: American Board of Internal Medicine

Dr. Smith, a board-certified medical oncologist, began his career at Georgetown University serving as the director of extramural oncology research, contributing over 50 articles to peer-reviewed medical journals. He has been in private practice in the DC metropolitan area for over 30 years caring for patients with a cancer diagnosis. He has been an integral advocate in the community to promote access to clinical research. Dr. Smith currently holds faculty appointments at Johns Hopkins School of Medicine and Georgetown University School of Medicine.


Radiation Oncologists

Contact Radiation Oncology: 
202-537-5139 or 202-537-4347

Victoria J. Croog, M.D. 

Medical Degree: Harvard Medical School
Residency: Memorial Sloan- Kettering Cancer Center
Board Certification:

Dr. Croog brings experience to the treatment of many disease sites with particular expertise in radiation for breast cancer. She has introduced several advanced breast radiation techniques, including treatment of the breast in the prone position and accelerated partial breast irradiation. Her interests also include stereotactic treatments for thoracic and central nervous system tumors, treatment of gynecologic malignancies with external beam radiation and high-dose rate brachytherapy, and definitive management of gastrointestinal and head and neck tumors.


Jean L. Wright M.D

Medical Degree: Columbia University Medical School
Residency: Memorial Sloan-Kettering Cancer Center

Dr. Wright was on the faculty of the University of Miami until she joined Johns Hopkins in 2014. She specializes in radiation treatment for breast cancer and she also has expertise  edin thoracic malignancies. Her research focuses on the management of locally advanced breast cancer, particularly on the role of radiation for patients who receive chemotherapy prior to mastectomy (neoadjuvant chemotherapy).



Our team of breast specialists includes pathology faculty members who specialize in breast cancer and have extensive experience evaluating and accurately classifying breast tissue specimens. Our pathologists are so trusted that it’s common for women to bring their slides from another facility to us for a second opinion. On occasion we discover abnormalities, including breast cancer, which may have been previously overlooked.

Breast Specialists

Reem Saadeh, M.D.

Medical Degree: Georgetown University School of Medicine
Residency: New York University
Fellowship: The Johns Hopkins Hospital
Board Certification:

Dr. Saadeh is a board-certified, experienced clinical geneticist whose mission at Sibley is to provide patient education and support. Her ultimate goal is to offer clear, accurate information and thorough understanding to help patients make an informed decision about next steps, including the option of genetic testing. Dr. Saadeh brings a gift for clarity in communication to the practice of cancer genetics counseling. 


Lynn Turner, R.T. (R) (M)

Lynn Turner, Radiologic Technologist, has been the Manager of the Sullivan Center for Breast Health since 2002. Lynn graduated Magna Cum Laude with a bachelor's degree in Radiologic Sciences from the University of Central Florida College of Health in 1989. Recognized by the American Registry of Radiologic Sciences in Radiology and Mammography, she holds current licenses in D.C., Maryland and Virginia. She brings over twenty years of experience in mammography technology and MQSA quality assurance. Before coming to Sibley, Lynn was Associate Director, Mobile Mammography Operations at George Washington University. Lynn is available to assist you with special needs, questions or concerns.


Jennie McLaughlin Tarica, R.N., M.S.N.

Jennie Tarica, Breast Center Nurse Navigator since July 2008, is an educator, advocate and guide. She coordinates all aspects of a patient’s care-from diagnosis and treatment to recovery. Jennie has been at Sibley since 1986, as a Clinical Nurse, Nurse Manager, Education and Training specialist in Oncology and Pain Management and most recently she has been the Pain Management Coordinator. She earned her MSN in Nursing Administration from George Mason University and she has been endorsed by the Professional Advancement for Clinical Excellence (PACE) at the RN III level since 2005. Jennie is a certified breast patient nurse navigator who works with patients and physicians to coordinate care.

Learn more about the comprehensive breast health services available at the Sullivan Center.

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