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Johns Hopkins Bayview Medical Center

Photo of Bayview Breast Center building.

The Johns Hopkins Breast Center opened in October 2012 on the Johns Hopkins Bayview campus. Located at 301 Mason Lord Drive in Suite 1300, the Center is led by a team including expert breast surgeons Mehran Habibi, M.D. and Kristen Broderick, M.D., and oncology nurse practitioner Marshalee George, Ph.D., AOCNP.

As part of the Sidney Kimmel Comprehensive Cancer Center, our breast care team practices within the established standards of cancer surveillance, treatment and research. The Center focuses on early detection and offers patients the latest treatments in a comfortable and private setting.

We offer comprehensive diagnostic and treatment services, such as:


Our Center uses digital mammography, which allows the radiologist to capture and manipulate the images so abnormalities can be seen more easily. Also available is 3D mammography, or tomosynthesis, a revolutionary screening and diagnostic tool designed for early detection of breast cancer that can be done in conjunction with a traditional 2D digital mammogram. At the Johns Hopkins Breast Center, when a patient comes for a diagnostic mammography to further evaluate a breast abnormality, she receives the highest quality digital imaging services available.


Only 20 percent of breast lumps are cancerous, but that doesn’t make the experience of getting a breast biopsy any less overwhelming. At the Johns Hopkins Breast Center, our staff is uniquely sensitive to each woman’s needs during her biopsy. We are one of the few centers in the area to have state-of-the-art biopsy equipment and provide an initial opinion immediately after the biopsy and a pathology diagnosis usually within 24 hours. Breast tissue biopsies are sent from all over the United States to our breast cancer pathologists for their expert opinions. Having quick access to these highly trained diagnosticians is a great benefit to our patients.


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. Knowing the exact type of breast cancer and the specifics of its prognostic factors is critical to creating a treatment plan that will provide you with the best opportunity for defeating this disease.

Medical Oncology

Most, but not all, patients diagnosed with breast cancer may need some form of chemotherapy or hormonal therapy as part of their treatment. At the Johns Hopkins Breast Center, our medical oncologists are specialists in the treatment of breast cancer. They are part of the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, which has set the standard in many areas of cancer treatment and research.

Our nurses are here to help patients manage their care throughout diagnosis, treatment and survivorship. We are dedicated to providing a warm and caring experience for everyone.

High Risk Clinic

Do you have questions or concerns about your risk for breast cancer? Do you have a history of atypical ductal hyperplasia (ADH), and/or lobular carcinoma in-situ (LCIS), breast cancer gene mutation (BRCA), mantle radiation (radiation to the neck, chest and armpits), Ashkenazi Jewish descent, first degree relative (such as a mother, siblings, etc.) diagnosed with breast cancer, and/or a history of breast cancer in the past three years and are considered high risk? The High Risk Clinic can assess your risk and offer help. Patients may self-refer.

The High Risk Clinic is overseen by an Oncology Nurse Practitioner who will: 

  • Review your medical and family history
  • Conduct a complete physical exam, including a clinical breast exam
  • Review mammogram, ultrasound and MRI studies
  • Initiate Tamoxifen therapy for breast cancer risk reduction
  • Refer to genetic counselor and a surgical oncologist

Dawn's Story: Breast Reconstruction After Breast Cancer

Our Experts

Laura Zager

Laura Zager, PA-C

Certified Physician Assistant 
Johns Hopkins Bayview; Johns Hopkins Howard County; Johns Hopkins White Marsh

Nurse Practitioner:
Marshalee George, Ph.D., AOCNP

Contact Us

We are located at:

Johns Hopkins Bayview Medical Center
301 Mason Lord Drive
Suite 1300
Baltimore, MD 21224

For more information or to make an appointment, call 410-550-8282.


Johns Hopkins Bayview Medical Center is located on the eastern edge of Baltimore city, only minutes from the Baltimore County line. For directions by phone, please call 410-550-5748.

From points South (including BWI Airport):
Take I-295 north to the Harbor Tunnel Thruway (I-895). After exiting the tunnel, take exit 12, Lombard Street. At the first stop light, proceed straight onto Bayview Boulevard.
- or -
Take I-95 through the Fort McHenry Tunnel to exit 59 (Eastern Avenue). Turn left onto Eastern Avenue and proceed approximately one mile to Bayview Boulevard on the right.

From points North and East:
Take I-95 south to exit 59 (Eastern Avenue). Turn right onto Eastern Avenue (west) and proceed approximately one mile to Bayview Boulevard on the right.
- or - 
Take I-895 south to exit 12, Lombard Street. At the first stop light, turn right onto Bayview Boulevard.

Once on campus:
Follow campus signage to the East garage and park in the garage or in the parking lot behind the 301 building. The 301 building is located north of the East garage. Upon exiting the garage, turn right. The 301 building is the next building on the right. The Johns Hopkins Breast Center is located in suite 1300 of the 301 building.